强激光与粒子束, 2017, 29 (9): 091005, 网络出版: 2017-08-30  

半导体激光光栅外腔光谱合束压窄光谱的理论研究

Theoretical study on narrow linewidth operation of spectral beam combined diode laser bar
作者单位
1 长春理工大学 高功率半导体激光国家重点实验室, 长春 130022
2 陆军装甲兵驻长春地区军事代表室, 长春 130103
摘要
介绍了一种减少半导体激光器阵列光栅外腔光谱合束(SBC)整体光谱展宽的方法, 通过加入一组变形棱镜对传统光谱合束结构进行了改善。变形棱镜的作用实现减小半导体激光线阵输出光斑宽度, 减小入射到光栅上的入射角度进而减小整体的光谱线宽。采用发光单元宽度为100 μm、周期为500 μm、由19个发光单元组成的常规CM-Bar条进行光栅-外腔光谱合束技术的理论推导及软件模拟, 得到了光谱线宽为3.2 nm。与通过增大柱透镜焦距来减小光谱线宽的方法相比, 此方法的优势是保证了整体光谱合束的整体结构在500 mm以内, 使得各个发光单元有足够反馈量, 抑制光束间串扰, 保证合束后的光束质量和效率。
Abstract
Our theoretical simulation calculation is expected to provide an approach for realizing narrow line width for a spectral beam combined diode laser bar. The conventional spectral beam combining structure was improved by adding a pair of anamorphic prisms. The anamorphic prisms reduces the output spot of the semiconductor laser line array, thereby theoretically reducing the incident angle to the grating and reducing the whole spectral line width .With the help of anamorphic prisms the whole wavelength of a spectral combined laser bar can be narrowed down to 3.2 nm from more than 10 nm. Compared with the method to reduce the spectral line width by increasing the focal length of cylindrical lens, the advantage of this approach is to ensure the overall structure of the whole spectral beam combining within 500 mm, which provides sufficient amount of feedback and guarantees the beam quality and efficiency of beam combining.

吴肖杰, 张俊明, 赵爽, 邹永刚, 马晓辉, 张志敏, 隋庆学, 吴国盛, 张贺. 半导体激光光栅外腔光谱合束压窄光谱的理论研究[J]. 强激光与粒子束, 2017, 29(9): 091005. Wu Xiaojie, Zhang Junming, Zhao Shuang, Zou Yonggang, Ma Xiaohui, Zhang Zhimin, Sui Qingxue, Wu Guosheng, Zhang He. Theoretical study on narrow linewidth operation of spectral beam combined diode laser bar[J]. High Power Laser and Particle Beams, 2017, 29(9): 091005.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!