基于楔形整形镜对半导体激光的光纤耦合

郭照师; 秦文斌; 李景; 刘友强; 曹银花; 孟娇; 关娇阳; 潘建宇; 兰天; 李庆轩; 王智勇

doi:10.37188/CJL.20200233

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基于楔形整形镜对半导体激光的光纤耦合

器件制备及器件物理 | 更新时间：2021-01-12

- 基于楔形整形镜对半导体激光的光纤耦合
- Fiber Coupling of Semiconductor Laser Based on Wedge-shaped Lens
- 发光学报 2021年42卷第1期页码：98-103
- 作者机构：
  
  1.北京工业大学材料与制造学部先进半导体光电技术研究所, 北京 100124
  2.中国电子科技集团公司第五十三研究所, 天津 300308
- 作者简介：
  
  [ "郭照师(1996-), 男, 山东菏泽人, 硕士研究生, 2018年于山东理工大学获得学士学位, 主要从事大功率半导体激光器技术的研究。E-mail:guozhaoshi95@163.com" ]
  [ "秦文斌(1981-), 男, 河北石家庄人, 博士, 副研究员, 2012年于北京工业大学获得博士学位, 主要从事大功率半导体激光器的研究。E-mail:wbqin@bjut.edu.cn" ]
- 基金信息：
  
  北京市科技计划(Z171100004417003)
- DOI：10.37188/CJL.20200233
  中图分类号： TN248.4
- 收稿：2020-08-04，
  
  录用：2020-9-3，
  
  纸质出版：2021-01
- 稿件说明：
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郭照师, 秦文斌, 李景, 等. 基于楔形整形镜对半导体激光的光纤耦合[J]. 发光学报, 2021,42(1):98-103.

Zhao-shi GUO, Wen-bin QIN, Jing LI, et al. Fiber Coupling of Semiconductor Laser Based on Wedge-shaped Lens[J]. Chinese Journal of Luminescence, 2021, 42(1): 98-103.
郭照师, 秦文斌, 李景, 等. 基于楔形整形镜对半导体激光的光纤耦合[J]. 发光学报, 2021,42(1):98-103. DOI： 10.37188/CJL.20200233.

Zhao-shi GUO, Wen-bin QIN, Jing LI, et al. Fiber Coupling of Semiconductor Laser Based on Wedge-shaped Lens[J]. Chinese Journal of Luminescence, 2021, 42(1): 98-103. DOI： 10.37188/CJL.20200233.

摘要

在半导体激光器的光纤耦合系统中，bar条的各发光点指向偏差（偏向角）会恶化光束整形效果，显著降低光纤耦合效率。针对该现象提出利用引入修正角的楔形整形镜补偿发光点的指向偏差，改善激光束的指向性和光束整形效果。通过ZEMAX软件模拟与实验验证，在光纤耦合系统中使用引入修正角后的楔形整形镜片，其整形效果显著改善，测量的光束参数积（BPPs）在快轴和慢轴方向分别为7.25 mm·mrad和5.05 mm·mrad，聚焦光斑为148 μm×135 μm（包含90%能量）。该系统将单个bar条耦合进芯径200 μm、数值孔径（NA）0.2的光纤中，在注入电流60 A时，获得稳定输出功率53 W，对应电-光转换效率为47%，光纤耦合效率为87%，相对于使用修正前的楔形整形镜片，光纤耦合效率提高了7%。

Abstract

In fiber coupling system of diode laser bars

directivity deviation of emitters deteriorates the beam shaping seriously

thus leading to the degradation of fiber coupling efficiency. In order to solve this problem properly

in this paper

a wedge-shaped lens with calibrated angle is proposed to compensate the directivity deviation of the emitters and then improve the directivity of the laser beam and shaping effect. Both ZEMAX simulation and experiments are conducted. The results show that significant improvements of the beam shaping are obtained by using such wedge-shaped lens with calibrated angle. The beam parameter products(BPPs) calculated in the fast and slow axis are 7.25 mm·mrad and 5.05 mm·mrad respectively

and the focal spot dimension is 148 μm×135 μm(with 90% energy enclosed). After coupled the laser beams into a standard fiber with 200 μm core diameter and 0.2 numerical aperture(NA)

the output power is measured to be 53 W and the electrical-to-optical conversion efficiency is 47% at the inject current of 60 A. Finally

the fiber coupling efficiency of 87% is achieved

increased by 7% compared to that of the conventional wedge-shaped lens.

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Keywords

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