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On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation
Device Fabrication and Physics | Updated：2021-04-23
|
On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation
- Chinese Journal of Luminescence Vol.42, Issue 4, (2021)
- Affiliations：State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science,Changchun,China,130033;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences,Beijing,China,100049;Peng Cheng Laboratory,Shenzhen,China,518055
- Author bio：
- Funds：National Key R&D Program of China(2017YFB1104400);National Natural Science Foundation of China(61934003);Projects of Jilin Province Science and Technology Development Plan(20200501007GX;20200501008GX)
- DOI：10.37188/CJL.20200378 CLC： TN952;TN248.4
Published：01 April 2021，
Received：10 December 2020，
Revised：31 December 2020，
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Cite this article
Ze-an LI, Yu-bing WANG, Li QIN, et al. On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation. [J]. Chinese Journal of Luminescence 42(4):510-517(2021)
Ze-an LI, Yu-bing WANG, Li QIN, et al. On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation. [J]. Chinese Journal of Luminescence 42(4):510-517(2021) DOI： 10.37188/CJL.20200378.
On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation
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"type": "bibr",
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"data": "等领域有着广阔的应用前景。特别是激光雷达作为遥感系统的重要传感器，在车辆自动驾驶系统中得到了广泛应用"
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{
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"data": "。远距离测距的激光雷达主要采用飞行时间(TOF)测距原理。TOF是双向测距技术，脉冲激光器向目标发射连续脉冲，同时触发内部计时电路，计时器测量激光脉冲到达目标并返回接收器的时间，从而获得目标距离"
},
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"data": [
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},
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"data": {
"text": "6",
"type": "bibr",
"rid": "R6",
"data": [
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"data": "6"
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},
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"data": "。这就对激光器发射的脉冲信号有很高的要求:脉冲峰值功率尽可能大，从而实现更远的探测距离;脉冲宽度尽可能窄，从而实现更高的探测精度。发射机由驱动电路和激光器共同组成，驱动电路输出的脉冲电流驱动激光器产生脉冲激光。驱动电路的性能决定了激光脉冲的各项参数，例如，激光脉冲的峰值功率取决于脉冲峰值电流大小，激光脉冲的宽度取决于脉冲电流的宽度。驱动电路的性能直接影响着激光雷达系统的参数，是激光雷达系统的重要组成部分。脉冲激光器驱动电路形式多样，应用最广泛的是谐振电容放电激光器驱动电路。Glaser等"
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"data": "7"
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},
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]
},
{
"name": "text",
"data": "使用GaN效应管产生峰值电流大于35 A、脉冲宽度小于4 ns的电流脉冲。张厚博等"
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"name": "text",
"data": "利用MOSFET开关器件驱动激光器产生峰值功率80 W、脉冲宽度3.7 ns的激光。"
}
]
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"data": "虽然目前脉冲激光器的驱动电路性能优越，但是对电源电压要求高，通常脉冲激光器的驱动电压要数十伏"
},
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{
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"data": "。在一些激光雷达系统中，电源电压难以达到驱动激光器的要求，最普遍的做法是利用变压电路升压"
},
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"data": "。变压器虽然能够提高电压，但是无疑增加了系统的体积和重量，增加了元器件成本，降低了激光雷达的便携性，且变压器在工作过程中会产生很强的电磁辐射，对附近的电子器件产生很大的电磁干扰。"
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"data": {
"text": "14",
"type": "bibr",
"rid": "R14",
"data": [
{
"name": "text",
"data": "14"
}
]
}
}
],
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"R13",
"R14"
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"text": "13-14",
"type": "bibr"
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": "做出创新，在储能电容充电端串联适当电感，形成RLC二阶微分振荡电路，电容电压随时间振荡，选取合适的电感，使电容在电压振荡的最高点处放电，理论上能够将激光器的驱动电压翻倍，从而使驱动电流翻倍。Tina-ti软件仿真结果与理论计算结果基本吻合。最终进行实验测量，引入充电电感后，脉冲激光器的驱动电压提高了87%，驱动电流提高了85%，输出功率提高了114%。本文提出的是一种提高脉冲激光器驱动电压的思想，不仅限于特定电路，在很多激光雷达系统中，可以通过这种方法设计驱动电路，提高脉冲激光器的输出功率。"
}
]
}
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"title": [
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"name": "text",
"data": "2 激光器及驱动电路简介"
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"data": [
{
"name": "text",
"data": "激光器是利用受激辐射原理使光在增益介质中振荡发射激光的器件，具有体积小、重量轻、能量转换效率高的优点"
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"data": "["
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"data": {
"text": "15",
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"data": [
{
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"data": "15"
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]
}
},
{
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"data": "]"
}
]
},
{
"name": "text",
"data": "。常见的激光器有普通半导体激光器、外腔半导体激光器、分布反馈半导体激光器和垂直腔面发射半导体激光器"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
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"data": {
"text": "16",
"type": "bibr",
"rid": "R16",
"data": [
{
"name": "text",
"data": "16"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": "等。激光器常见的封装类型有直插式封装"
},
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"data": [
{
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"data": "["
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"data": [
{
"name": "xref",
"data": {
"text": "17",
"type": "bibr",
"rid": "R17",
"data": [
{
"name": "text",
"data": "17"
}
]
}
},
{
"name": "text",
"data": "-"
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{
"name": "xref",
"data": {
"text": "18",
"type": "bibr",
"rid": "R18",
"data": [
{
"name": "text",
"data": "18"
}
]
}
}
],
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"R18"
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"text": "17-18",
"type": "bibr"
}
},
{
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"data": "]"
}
]
},
{
"name": "text",
"data": "和蝶形封装"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "blockXref",
"data": {
"data": [
{
"name": "xref",
"data": {
"text": "19",
"type": "bibr",
"rid": "R19",
"data": [
{
"name": "text",
"data": "19"
}
]
}
},
{
"name": "text",
"data": "-"
},
{
"name": "xref",
"data": {
"text": "20",
"type": "bibr",
"rid": "R20",
"data": [
{
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"data": "20"
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]
}
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],
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"data": "]"
}
]
},
{
"name": "text",
"data": "等，其中直插型封装会引入杂散电感"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "9",
"type": "bibr",
"rid": "R9",
"data": [
{
"name": "text",
"data": "9"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": "。杂散电感会降低驱动电流的峰值，增大脉宽，导致输出光功率下降、脉冲宽度大"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
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"name": "xref",
"data": {
"text": "9",
"type": "bibr",
"rid": "R9",
"data": [
{
"name": "text",
"data": "9"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": "。在封装过程中应尽量降低杂散电感引入量。"
}
]
},
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"name": "p",
"data": [
{
"name": "text",
"data": "实验使用的激光器由滨松公司提供，如"
},
{
"name": "xref",
"data": {
"text": "图1",
"type": "fig",
"rid": "F1",
"data": [
{
"name": "text",
"data": "图1"
}
]
}
},
{
"name": "text",
"data": "所示。该器件为直插封装类型，发射激光波长为905 nm。电流-功率关系如"
},
{
"name": "xref",
"data": {
"text": "图2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "图2"
}
]
}
},
{
"name": "text",
"data": "，典型脉冲电流35 A，脉冲功率100 W，激光发光面积为360 μm×10 μm，主要用于激光雷达、危险检测系统。"
}
]
},
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"lang": "zh",
"label": [
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"data": "图1"
}
],
"title": [
{
"name": "text",
"data": "TO封装的激光器外形图"
}
]
},
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.1"
}
],
"title": [
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"data": "Photograph of TO packaged laser"
}
]
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"data": "激光器的"
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"data": "曲线"
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]
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"label": [
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"data": "Fig.2"
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"data": " curve of laser"
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"data": [
{
"name": "text",
"data": "目前，常用的脉冲激光器驱动电路的简化模型"
},
{
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"data": [
{
"name": "text",
"data": "["
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"name": "xref",
"data": {
"text": "21",
"type": "bibr",
"rid": "R21",
"data": [
{
"name": "text",
"data": "21"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": "如"
},
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"data": {
"text": "图3",
"type": "fig",
"rid": "F3",
"data": [
{
"name": "text",
"data": "图3"
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]
}
},
{
"name": "text",
"data": "所示，其中左侧回路是电路的充电回路，右侧回路是电路的放电回路。"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "U"
}
]
},
{
"name": "text",
"data": "是电源电压，"
},
{
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"data": [
{
"name": "text",
"data": "R"
}
]
},
{
"name": "text",
"data": "是充电电路电阻，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "C"
}
]
},
{
"name": "text",
"data": "是储能电容，LD是激光器，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "L'"
}
]
},
{
"name": "text",
"data": "是放电回路电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "R'"
}
]
},
{
"name": "text",
"data": "是放电回路电阻，SW为高速开关。电路在充电时，SW断开，储能电容充电;放电时SW闭合，储能电容储存的电荷完全释放，驱动激光器产生脉冲激光。"
}
]
},
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"caption": [
{
"lang": "zh",
"label": [
{
"name": "text",
"data": "图3"
}
],
"title": [
{
"name": "text",
"data": "常见的脉冲激光器驱动电路模型"
}
]
},
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.3"
}
],
"title": [
{
"name": "text",
"data": "Common drive circuit model of pulse laser"
}
]
}
],
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"note": [],
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"data": [
{
"name": "text",
"data": "本文在传统驱动电路"
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"data": [
{
"name": "text",
"data": "["
},
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"name": "xref",
"data": {
"text": "22",
"type": "bibr",
"rid": "R22",
"data": [
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"data": "22"
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},
{
"name": "text",
"data": "-"
},
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"name": "xref",
"data": {
"text": "24",
"type": "bibr",
"rid": "R24",
"data": [
{
"name": "text",
"data": "24"
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]
}
}
],
"rid": [
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"R23",
"R24"
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"text": "22-24",
"type": "bibr"
}
},
{
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}
]
},
{
"name": "text",
"data": "的基础上做出创新，如"
},
{
"name": "xref",
"data": {
"text": "图4",
"type": "fig",
"rid": "F4",
"data": [
{
"name": "text",
"data": "图4"
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]
}
},
{
"name": "text",
"data": "所示，在驱动电路的充电端增加一只电感，这样在充电电路中有电阻、电容和电感，形成RLC二阶微分振荡电路。选取合适的电感"
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"data": "L"
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]
},
{
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"data": "(下文称之为充电电感)使得每次电容电压振荡的最高点处恰好SW开关闭合，理论上可以使脉冲激光器的驱动电压翻倍。与原电路相比只增加了一只电感，几乎不增重量，却能极大地提高激光器的输出功率。"
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"data": "新型的脉冲激光器驱动电路模型"
}
]
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"label": [
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"data": "Fig.4"
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"title": [
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"data": "储能电容充电时的等效电路如"
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"data": "所示，根据基尔霍夫定律，有"
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"data": "("
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"data": [
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"data": "t"
}
]
},
{
"name": "text",
"data": ")和"
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"data": [
{
"name": "text",
"data": "u"
}
]
},
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"data": [
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"data": [
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"data": "C"
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{
"name": "text",
"data": "("
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "t"
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]
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{
"name": "text",
"data": ")分别代表电源、电感"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "text",
"data": "、电阻"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "R"
}
]
},
{
"name": "text",
"data": "和电容"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "C"
}
]
},
{
"name": "text",
"data": "的电压。可以看出"
},
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{
"name": "text",
"data": "u"
}
]
},
{
"name": "sub",
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"data": [
{
"name": "text",
"data": "C"
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{
"name": "text",
"data": "("
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "t"
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]
},
{
"name": "text",
"data": ")随时间振荡。令"
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"data": "，为电容电压最高点的时刻，此时"
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"data": ")在最大值。开关闭合的时刻为"
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"data": "T"
}
]
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"data": "，令电容电压在振荡的最高点处恰好开关闭合，即"
},
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"data": [
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"data": "，根据"
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"data": [
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"data": "C"
}
]
},
{
"name": "text",
"data": "可以计算出对应的"
},
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"data": [
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"data": "L"
}
]
},
{
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"data": "。计算得"
}
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"data": "为电容两端的最大电压，在"
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"data": " 较小的情况下，可以使激光器驱动电压从"
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"data": "U"
}
]
},
{
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"data": "提高到将近2"
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"data": "U"
}
]
},
{
"name": "text",
"data": "，激光器的驱动电流和输出功率也近似翻倍。"
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}
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "采用Tina-ti软件对电路进行仿真，Tina-ti软件是一个强大的仿真工具，它提供了SPICE的所有传统直流、瞬态和频率分析，具有广泛的后处理功能，适用于模拟电路和开关模式的电源电路的仿真，可以在最短的时间内启动并运行，能够轻松处理复杂的电路。"
}
]
},
{
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"data": [
{
"name": "text",
"data": "仿真电路如"
},
{
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"data": {
"text": "图6",
"type": "fig",
"rid": "F6",
"data": [
{
"name": "text",
"data": "图6"
}
]
}
},
{
"name": "text",
"data": "，其中"
},
{
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"data": [
{
"name": "text",
"data": "U"
}
]
},
{
"name": "text",
"data": "是电源电压，"
},
{
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"data": [
{
"name": "text",
"data": "R"
}
]
},
{
"name": "text",
"data": "是供电导线的电阻，"
},
{
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"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "text",
"data": "是实验引入的电感，"
},
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"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "x"
}
]
},
{
"name": "text",
"data": "是驱动激光器的储能电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "C"
}
]
},
{
"name": "text",
"data": "是储能电容，"
},
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"data": [
{
"name": "text",
"data": "C"
}
]
},
{
"name": "sub",
"data": [
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"name": "text",
"data": "p"
}
]
},
{
"name": "text",
"data": "是激光器封装引起的浮动电容，"
},
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"name": "italic",
"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "p+"
}
]
},
{
"name": "text",
"data": "是激光器封装引起的正极电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "w+"
}
]
},
{
"name": "text",
"data": "为键合线引入的电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "L"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "p-"
}
]
},
{
"name": "text",
"data": "为激光器封装引起的负极电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "C"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "j"
}
]
},
{
"name": "text",
"data": "为激光器的结电容，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "R"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "d"
}
]
},
{
"name": "text",
"data": "为激光器的串联电感，"
},
{
"name": "italic",
"data": [
{
"name": "text",
"data": "R"
}
]
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "为限流电阻，SW为GaN高速开关。"
}
]
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"lang": "zh",
"label": [
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"data": "图6"
}
],
"title": [
{
"name": "text",
"data": "Tina-ti软件仿真电路图"
}
]
},
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.6"
}
],
"title": [
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"name": "text",
"data": "Circuit diagram of Tina-ti simulation"
}
]
}
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},
{
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"data": "=40 V,"
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"data": "R"
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"data": "=1 Ω,"
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"data": "C"
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{
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"data": "=600 fF,"
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]
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"name": "sub",
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{
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"data": "=4 nH,"
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"data": "L"
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"name": "sub",
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{
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"data": "=300 pH,"
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"data": "L"
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]
},
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]
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{
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"data": "=6 nH,"
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"data": "C"
}
]
},
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"data": "j"
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]
},
{
"name": "text",
"data": "=23 pF,"
},
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"data": "R"
}
]
},
{
"name": "sub",
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"data": "=200 mΩ，脉冲重复频率为100 kHz。根据公式"
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"data": "=0三种情况进行仿真，结果如"
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"text": "图7",
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"data": "=0曲线的2倍，即在40 V电压时引入适当电感，可以使脉冲电流翻倍，等效于原80 V驱动电压的效果，与理论计算值吻合。"
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"data": "实际上，引入比计算值略大的电感同样能够起到很好的作用。"
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"data": {
"text": "图8",
"type": "fig",
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]
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"data": "展示了分别引入10.1~15 mH的电感，与原电路相比都能起到很好地提高脉冲电流的作用。根据公式(7)，电感的大小与电路的振荡周期并不是线性关系，振荡周期与电容的初始电压也并非线性关系，所以电感的选取可以比理论计算值大一些，这就为实际电路的设计提供了很大的选择空间。另外，在图中可以看出，供电电路中电感的引入并不会增大脉冲电流的脉宽，不会产生副作用。"
}
]
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"name": "text",
"data": "引入不同充电电感的电流仿真波形图"
}
]
},
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"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.8"
}
],
"title": [
{
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"data": "Current simulation waveforms of introducing different charging inductances"
}
]
}
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"data": "对于不同类型的激光器，以及同种类型但封装技术不同的激光器，杂散电感的值通常不同，杂散电感越大，脉冲电流的峰值越小，脉宽越大"
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"data": "。为了探究供充电电感对不同封装类型的激光器驱动电流的提升效果，针对不同封装电感的激光器进行仿真，结果如"
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"data": "，其中"
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"data": "，为放电回路的总电感。可以看出，激光器封装电感会对脉冲电流峰值产生很大影响，随着封装电感的增大，脉冲电流峰值急剧下降，且脉宽增大，二次振荡现象愈发明显，对激光雷达的探测距离和精度产生很大影响。在应用中应尽量降低封装电感的引入，使用小封装电感的激光器。电流脉冲宽度与回路总电感的值有关，与充电电感无关。且对于不同封装电感的激光器，引入充电电感后均能起到很好的提升脉冲电流的效果。"
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"data": "取不同值时引入电感前后的电流仿真波形图。(a)"
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}
]
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"title": [
{
"name": "text",
"data": "Current simulation waveforms before and after introducing inductance when"
},
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"data": "L'"
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"data": " takes different values. (a)"
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"data": "=1 nH. (b)"
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"data": "=3 nH. (c)"
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]
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"data": "=10 nH. (d)"
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}
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"data": "虽然充电电感对于不同封装电感的激光器都有放大驱动电流的效果，但是放大效率却并不相同，如"
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"text": "表1",
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"data": "所示。可以看出随着放电回路电感的增大，充电电感对于脉冲电流的提升效率会下降。在应用中尽量选取封装电感较小的激光器，充电电感对于脉冲电流的放大效率更高。"
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"title": [
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"data": "Current amplification efficiency of laser circuits with different package inductances after introducing charging inductance"
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"data": "电流放大效率"
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]
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"data": "105%"
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]
}
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"data": [
{
"name": "text",
"data": "对于不同种类型的激光器，结电容的值通常不同，为了探究引入的电感对不同类型脉冲激光器驱动电流的提升效果，针对不同大小结电容的脉冲激光器进行仿真，结果如"
},
{
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"data": {
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"type": "fig",
"rid": "F10",
"data": [
{
"name": "text",
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}
]
}
},
{
"name": "text",
"data": "。可以看出，对于不同结电容的激光器，其仿真曲线几乎重合，在充电电路中引入的电感都能大幅度提高激光器的驱动电流。"
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"title": [
{
"name": "text",
"data": "不同结电容的激光器驱动电路引入充电电感前后仿真波形图"
}
]
},
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"label": [
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"data": "Fig.10"
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],
"title": [
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"data": "Simulation waveforms of laser driving circuit with different junction capacitance before and after introducing charging inductor"
}
]
}
],
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"data": "在实际应用中，电感除了表现出感性之外，自身存在内阻，尤其对于感值大、封装体积小的电感来说，其内阻是不可忽略的重要参数。为了探究不同电感的内阻对于激光器的影响，针对不同内阻大小的电感的供电电路进行仿真，结果如"
},
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"text": "图11",
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"data": "图11"
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"data": "所示，其中"
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"data": "是充电电感的内阻。可以看出，只要电感的感值恰当，不同内阻的仿真曲线重合，基本不会影响激光器的输出功率。"
}
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"data": "Fig.11"
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"title": [
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]
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"data": [
{
"name": "text",
"data": "根据仿真的电路图制作激光器的驱动电路，分别在不同电源电压下引入10.1 mH的充电电感后测量激光器的输出功率。实验测量出在该功率下不加电感时所需的电源电压，计算出引入电感后的放大效率。结果如"
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"data": {
"text": "表2",
"type": "table",
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"data": [
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"data": "表2"
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]
}
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"data": "，可以看出，引入的电感能够将取得电压提高87%以上。"
}
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"label": [
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"title": [
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"data": "不同电源电压下引入充电电感后电压的放大效率"
}
]
},
{
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"label": [
{
"name": "text",
"data": "Tab.2"
}
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"title": [
{
"name": "text",
"data": "Voltage amplification efficiency after introducing charging inductor under different power supply voltages"
}
]
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"data": "引入适当电感后激光器功率 "
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[
{
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"data": "13.57"
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"data": "87.2%"
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"data": "30.0"
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"data": [
{
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"data": "17.62"
}
]
},
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"align": "center",
"data": [
{
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"data": "56.5"
}
]
},
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"data": "88.3%"
}
]
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"align": "center",
"data": [
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"data": "35.0"
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"data": "21.07"
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"data": "66.0"
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]
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"data": "88.6%"
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"style": "border-bottom:1px solid #000;",
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"data": "23.69"
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]
},
{
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
"data": [
{
"name": "text",
"data": "75.0"
}
]
},
{
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
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"data": "87.5%"
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}
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"type": "table",
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"data": [
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"data": "表3"
}
]
}
},
{
"name": "text",
"data": "为在40 V驱动电压下，充电电路引入不同的充电电感后的脉冲电流测试结果。可以看出，引入10.1~15 mH充电电感均能起到很好的提升脉冲电流和脉冲功率的效果，对电感感值精度要求不高，在实际应用中可以有很大的选择空间。"
}
]
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"label": [
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"title": [
{
"name": "text",
"data": "引入不同充电电感后脉冲电流和功率的放大效率"
}
]
},
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Tab.3"
}
],
"title": [
{
"name": "text",
"data": "Amplification efficiency of pulse current and power after introducing different charging inductances"
}
]
}
],
"note": [],
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"data": "充电电感 "
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"data": "峰值电流 "
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{
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"data": "8.71"
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"data": "23.8"
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]
},
{
"colspan": "1",
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"data": "114.4%"
}
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{
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"align": "center",
"data": [
{
"name": "text",
"data": "13"
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"align": "center",
"data": [
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"name": "text",
"data": "8.67"
}
]
},
{
"colspan": "1",
"rowspan": "1",
"align": "center",
"data": [
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"name": "text",
"data": "84.9%"
}
]
},
{
"colspan": "1",
"rowspan": "1",
"align": "center",
"data": [
{
"name": "text",
"data": "23.6"
}
]
},
{
"colspan": "1",
"rowspan": "1",
"align": "center",
"data": [
{
"name": "text",
"data": "112.6%"
}
]
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[
{
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
"data": [
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"data": "15"
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},
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"style": "border-bottom:1px solid #000;",
"data": [
{
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"data": "8.64"
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]
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
"data": [
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"name": "text",
"data": "84.2%"
}
]
},
{
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
"data": [
{
"name": "text",
"data": "23.3"
}
]
},
{
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"rowspan": "1",
"align": "center",
"style": "border-bottom:1px solid #000;",
"data": [
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"data": "110.0%"
}
]
}
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"data": "对比"
},
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"data": {
"text": "图8",
"type": "fig",
"rid": "F8",
"data": [
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"data": "图8"
}
]
}
},
{
"name": "text",
"data": "的仿真结果与"
},
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"data": {
"text": "表3",
"type": "table",
"rid": "T3",
"data": [
{
"name": "text",
"data": "表3"
}
]
}
},
{
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"data": "的实验结果可以看出，实验中激光器的峰值电流约为仿真结果的60%。造成这种结果的主要原因有两个:首先，Tina-Ti软件是在理想条件下对电路仿真，未考虑激光器封装过程中的杂散电阻，而杂散电阻的存在会对脉冲峰值电流产生很大影响"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "9",
"type": "bibr",
"rid": "R9",
"data": [
{
"name": "text",
"data": "9"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": ";其次，在仿真电路中各元器件的参数是理想恒定值，而实际各元器件在高电压和大电流的作用下，属性参数值都会发生改变，因此实验测量与仿真结果相比产生较大偏差。"
}
]
},
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"name": "p",
"data": [
{
"name": "text",
"data": "由于激光器自身的属性，每个激光器都有阈值电流。只有驱动电流大于阈值电流时才会发光，因此激光器的输出功率与驱动电流并非严格的线性关系，引入电感后的激光器功率放大效率总是大于电流放大效率。"
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "在电源电压40 V时，采用光电探测器和示波器测量引入充电电感前后的脉冲波形，结果如"
},
{
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"data": {
"text": "图12",
"type": "fig",
"rid": "F12",
"data": [
{
"name": "text",
"data": "图12"
}
]
}
},
{
"name": "text",
"data": "。可以看出，引入电感后，激光脉冲的波形基本未发生变化，没有产生新的毛刺或杂波，脉冲的宽度也未展宽。充电电感的引入只是提升脉冲的功率，并不会对脉冲波形产生不良影响。"
},
{
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"data": {
"text": "图12",
"type": "fig",
"rid": "F12",
"data": [
{
"name": "text",
"data": "图12"
}
]
}
},
{
"name": "text",
"data": "为仅用光电探测器测量的脉冲波形，手持光电探测器不能准确测量脉冲功率，图中脉冲的峰值不具有参考价值，脉冲功率用功率计测量。"
}
]
},
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"label": [
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"name": "text",
"data": "图12"
}
],
"title": [
{
"name": "text",
"data": "引入充电电感前后的脉冲波形图"
}
]
},
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.12"
}
],
"title": [
{
"name": "text",
"data": "Waveform of laser pulse before and after introducing charging inductor"
}
]
}
],
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{
"name": "p",
"data": [
{
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},
{
"name": "text",
"data": "Kilowatt laser driver with 120 A, sub-10 nanosecond pulses in< 3 cm using an GaN FET"
},
{
"name": "text",
"data": " [C]."
},
{
"name": "text",
"data": "Proceeding of the 2018 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management"
},
{
"name": "text",
"data": ", "
},
{
"name": "text",
"data": "Shanghai, China"
},
{
"name": "text",
"data": ", "
},
{
"name": "text",
"data": "2018"
},
{
"name": "text",
"data": ":"
},
{
"name": "text",
"data": "1"
},
{
"name": "text",
"data": "-"
},
{
"name": "text",
"data": "6"
},
{
"name": "text",
"data": "."
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],
"title": "Kilowatt laser driver with 120 A, sub-10 nanosecond pulses in< 3 cm using an GaN FET"
}
]
}
]
},
"response": [],
"contributions": [],
"acknowledgements": [],
"conflict": [],
"supportedby": [],
"articlemeta": {
"doi": "10.37188/CJL.20200378",
"clc": [
[
{
"name": "text",
"data": "TN952;TN248.4"
}
]
],
"dc": [
{
"name": "text",
"data": "A"
}
],
"publisherid": "1000-7032(2021)04-0510-08",
"citeme": [],
"fundinggroup": [
{
"lang": "zh",
"text": [
{
"name": "text",
"data": "国家重点研发计划（2017YFB1104400）;国家自然科学基金（61934003）;吉林省科技发展计划（20200501007GX，20200501008GX）资助项目"
}
]
},
{
"lang": "en",
"text": [
{
"name": "text",
"data": "Supported by National Key R&D Program of China (2017YFB1104400); National Natural Science Foundation of China (61934003); Projects of Jilin Province Science and Technology Development Plan (20200501007GX, 20200501008GX)"
}
]
}
],
"history": {
"received": "2020-12-10",
"revised": "2020-12-31",
"ppub": "2021-04-01",
"opub": "2021-10-22"
},
"copyright": {
"data": [],
"year": "2021"
}
},
"appendix": [],
"type": "research-article",
"ethics": [],
"supplementary": [],
"journalTitle": "发光学报",
"issue": "04",
"volume": "42",
"originalSource": []
}
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