Linear polarization and narrow-linewidth external-cavity semiconductor laser based on birefringent Bragg grating optical feedback

被引：4

作者：

Chen, Jiaqi ^{[1
,2
]}

Chen, Chao ^{[1
,2
,3
]}

Guo, Qi ^{[4
]}

Sun, Jingjing ^{[1
]}

Zhang, Jianwei ^{[1
]}

Zhou, Yinli ^{[1
]}

Liu, Zhaohui ^{[1
]}

Yu, Yongsen ^{[4
]}

Qin, Li ^{[1
,3
]}

Ning, Yongqiang ^{[1
,3
]}

Wang, Lijun ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Luminescence & Applicat, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Xiongan Innovat Inst, Xiongan 071800, Peoples R China

[4] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2024年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Semiconductor laser; Narrow linewidth; Linear polarization; Birefringent Bragg grating; BY-POINT INSCRIPTION; DIODE-LASERS; FIBER; CESIUM;

D O I：

10.1016/j.optlastec.2023.110211

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate an external-cavity semiconductor laser (ECSL) with linear polarization and a narrow linewidth. A birefringent Bragg grating prepared by a femtosecond laser point-by-point technique in a polarization-maintaining fiber (PMF) is used to provide external-cavity feedback, and its polarization-dependent characteristics enable selection of the main polarization mode and linewidth narrowing of the ridge waveguide emission gain chip (GC). This compact and robust ECSL achieves an output power of > 60 mW and a polarization extinction ratio (PER) of > 30 dB. We simulate and calculate the linewidth and injection current, while a Lorentz linewidth of 2.58 kHz is obtained based on delayed self-heterodyne beat frequency measurement. This flexible and cost-effective solution allows realization of a compact ECSL with linear polarization and a narrow linewidth.

引用

页数：7

共 37 条

[1] External cavity diode lasers with 5kHz linewidth and 200nm tuning range at 1.55μm and methods for linewidth measurement [J].