高功率掺铥光纤激光器及其在生物组织切割中的应用
High-power Thulium-doped Fiber Laser and Its Application in Biological Tissue Cutting
- 发光学报 2021年42卷第5期 页码：708-716
- 作者机构：
1.北京交通大学光波技术研究所 全光网络与现代通信网教育部重点实验室，北京 100044
2.河北大学物理科学与技术学院 光信息技术创新中心，河北 保定 071002
- 作者简介：
[ "韩文国(1985-)，男，甘肃张掖人，博士研究生,2013年于北京交通大学获得学士学位，主要从事2 μm波段光纤激光器方面的研究。E-mail: 14111021@bjtu.edu.cn" ]
[ "延凤平(1966-)，男，山西兴县人，博士，教授,1996 年于北方交通大学获得博士学位，主要从事光纤激光器、光纤传感器、光纤通信、基于太赫兹超材料等方面的研究。E-mail:fpyan@bjtu.edu.cn" ]
[ "冯亭(1986-)，男，河北张家口人，博士，副教授,2014 年于北京交通大学获得博士学位，主要从事光纤激光、光纤传感器及其应用等方面的研究。E-mail: wlxyft@hbu.edu.cn" ]
- 基金信息：国家自然科学基金(61827818;61620106014;61775128)
DOI：10.37188/CJL.20210064
中图分类号：
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韩文国, 延凤平, 冯亭, 等. 高功率掺铥光纤激光器及其在生物组织切割中的应用[J]. 发光学报, 2021,42(5):708-716.
Wen-guo HAN, Feng-ping YAN, Ting FENG, et al. High-power Thulium-doped Fiber Laser and Its Application in Biological Tissue Cutting[J]. Chinese Journal of Luminescence, 2021,42(5):708-716.
韩文国, 延凤平, 冯亭, 等. 高功率掺铥光纤激光器及其在生物组织切割中的应用[J]. 发光学报, 2021,42(5):708-716. DOI： 10.37188/CJL.20210064.
Wen-guo HAN, Feng-ping YAN, Ting FENG, et al. High-power Thulium-doped Fiber Laser and Its Application in Biological Tissue Cutting[J]. Chinese Journal of Luminescence, 2021,42(5):708-716. DOI： 10.37188/CJL.20210064.
摘要
搭建了一个连续波高功率掺铥光纤激光器，并进行了生物组织切割研究。利用自制光纤光栅搭建了线形腔掺铥光纤激光种子源，种子源输出波长为1 941.10 nm，光信噪比为75 dB,50 min内的波长抖动和功率抖动分别小于0.04 nm和0.265 dB，斜率效率和最大输出功率分别为5.6%和186 mW。基于主振荡功率放大结构，分别搭建了前置光放大器和主光放大器，两放大器的斜率效率分别为14.3%和35.86%，经过两级放大后得到21.9 W的激光输出。利用经光束整形后的激光光束进行了生物组织切割实验。设计了多组实验观察该激光器在不同功率和移动速度情况下，切割深度的变化情况。实验表明该掺铥光纤激光器具有良好的切割作用，在生物医学领域具有应用潜力。
Abstract
A continuous-wave high-power thulium-doped fiber laser was proposed and its biological tissue cutting was studied. A linear cavity thulium-doped fiber laser source was built by using homemade fiber gratings. The output wavelength of the laser source was 1 941.10 nm, and the optical signal-to-noise ratio is 75 dB. The wavelength and power fluctuations within 50 min were less than 0.04 nm and 0.265 dB, respectively. The slope efficiency and the maximum output power were 5.6% and 186 mW, respectively. According to the master-oscillator power amplifier technology, a pre-amplifier and a main-amplifier were built. The slope efficiencies of the two amplifiers were 14.3% and 35.86%, respectively. After two-stage amplification, the final output power was 21.9 W. The biological tissue cutting experiment was carried out by using the laser beam after beam shaping. Several groups of experiments were designed to observe the cutting depth of the laser under different power and moving speed. The experimental results show that the thulium-doped fiber laser has good cutting effect, and it has potential application in biomedical field.
关键词
光纤激光器掺铥光纤高功率组织切割
Keywords
fiber laserthulium-doped fiberhigh-powertissue cutting
references
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