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.
参考文献

[1] Fan T Y, Sanchez A. Coherent (phased array) and wavelength (spectral) beam combining compared[C]//Proc of SPIE. 2005, 5709: 157-164.

[2] Evans G A, Hammer J M, Levi A F J. Surface emitting semiconductor lasers and arrays[M]. San Diego: Academic Press, 1993: 379-386.

[3] Wang P Y, Gheen A, Wang Z. Beam shaping technology for laser diode arrays[C]//Proc of SPIE. 2002, 4770: 131-135.

[4] Cook C C, Fan T Y. Spectral beam combining of Yb-doped fiber lasers in an external cavity[J]. Optics & Photonics News, 1999, 10(10): 163-166.

[5] Fan T Y, Sanchez A, Daneu V, et al. Laser beam combining for power and brightness scaling[C]//IEEE Aerospace Conf Proc. 2000: 49-54.

[6] Zhang J,Peng H, Fu X, et al. CW 50 W/M2=10.9 diode laser source by spectral beam combining based on a transmission grating[J]. Optics Express, 2013, 21(3): 3627-3632.

[7] Zhu Z, Gou L, Jiang M, et al. High beam quality in two directions and high efficiency output of a diode laser array by spectral-beam-combining[J]. Optics Express, 2014, 22(15): 17804-17809.

[8] 孟慧成, 武德勇, 谭昊, 等. 窄光谱高亮度半导体激光器光栅-外腔光谱合束实验研究[J]. 中国激光, 2015, 42: 0302003. (Meng Huicheng, Wu Deyong, Tan Hao, et al. Experimental study on high brightness and narrow band of diode laser by spectral beam combining of grating-external cavity. Chinese J Lasers, 2015, 42: 0302003)

[9] 孟慧成, 谭昊, 李建民, 等. 半导体激光器光栅外腔光谱合束技术研究进展[J]. 激光与光电子学进展, 2015, 52(2): 33-40. (Meng Huicheng, Tan Hao, Li Jianmin, et al. Development of spectral beam combining of diode laser by grating and external cavity. Laser Optoelectron Prog, 2015, 52: 33-40)

[10] Zweiback J, Krupke W F. 28 W average power hydrocarbon-free rubidium diode pumped alkali laser[J]. Optics Express, 2010, 18(2): 1444-1449.

[11] Jambunathan V, Miura T, Těsnohlídková L, et al. Efficient laser performance of a cryogenic Yb: YAG laser pumped by fiber coupled 940 and 969 nm laser diodes[J]. Laser Physics Letters, 2014, 12(1): 015002.

[12] 李志永, 谭荣清, 徐程, 等. 用于铷蒸气激光泵浦的窄线宽阵列半导体激光器[J]. 强激光与粒子束, 2013, 25(4): 875-878. (Li Zhiyong, Tan Rongqing, Xu Cheng, et al. Laser diode array with narrow linewidth for rubidium vapor laser pumping. High Power Laser and Particle Beams, 2013, 25(4): 875-878)

[13] 李元栋, 胡猛, 吴习文. Talbot外腔压窄线阵大功率半导体激光器输出谱宽[J]. 强激光与粒子束, 2013, 25(10): 2561-2564. (Li Yuandong, Hu Meng, Wu Xiwen. Spectral narrowing of high-power diode laser array based on Talbot external cavity. High Power Laser and Particle Beams, 2013, 25(10): 2561-2564)

[14] 朱占达, 缑龙, 姜梦华, 等. 三种半导体阵列光谱组束结构的输出特性[J]. 强激光与粒子束, 2014, 26: 091022. (Zhu Zhanda, Gou Long, Jiang Menghua, et al. Output characteristics of diode laser array by three different spectral beam combing structures. High Power Laser and Particle Beams, 2014, 26: 091022)

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.

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