4 μm波段宽谱可调谐外腔量子级联激光器

Ma Yuhang, 马宇航; Wu Hao, 吴昊; Li Zaijin, 李再金; Zhang Jianwei, 张建伟; Zhang Xing, 张星; Chen Chao, 陈超; Ning Yongqiang, 宁永强; Qu Yi, 曲轶; Peng Hangyu, 彭航宇; Qin Li, 秦莉; Wang Lijun, 王立军

doi:10.3788/cjl221370

中国激光

2023

DOI: 10.3788/cjl221370

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4 μm波段宽谱可调谐外腔量子级联激光器

马宇航 Ma Yuhang,

吴昊 Wu Hao,

李再金 Li Zaijin

et al.

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2024

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Cited by 2 publications

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Research on mid-infrared quantum cascade lasers spectral beam combining

Fan,

Zhang,

Wang

et al. 2024

Front. Phys.

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Quantum cascade lasers (QCLs) in the mid-infrared (MIR) hold significant potential for widespread applications in both military and civilian contexts. However, the utility of present single-chip QCLs is hampered by issues such as low output power and subpar beam quality. This study addresses these limitations by employing spectral beam combining (SBC) based on a diffraction grating, with an aim to enhance both power and beam quality of MIR QCLs. Coaxial power synthesis of three single-chip QCLs (around 4.75 μm) is achieved experimentally, importantly, the beam quality did not decrease after combining, essentially maintaining the same quality as before combining. It is proposed that there are four main factors affecting the combining efficiency, namely operating optical power (or driving current) of the chips, individual differences in QCL chips, diffraction grating, and reflectivity of feedback mirror, and their effects on the combining efficiency are discussed separately. This study confirms that SBC is an effective way to obtain high-power and high-beam quality MIR QCL sources, and lays a research foundation for more beam spectral combining.

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Research on mid-infrared quantum cascade lasers spectral beam combining

Fan,

Zhang,

Wang

et al. 2024

Front. Phys.

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1967~2033 nm波段硅基可调谐外腔半导体激光器设计与仿真

Wan Haoran,

Yang Yulin,

Qiao Zhongliang

et al. 2024

中国激光

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4 μm波段宽谱可调谐外腔量子级联激光器

Cited by 2 publications

References 14 publications

Research on mid-infrared quantum cascade lasers spectral beam combining

Research on mid-infrared quantum cascade lasers spectral beam combining

1967~2033 nm波段硅基可调谐外腔半导体激光器设计与仿真

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