High-power external cavity diode laser with narrow linewidth emission and adjustable polarization state at 445 nm

被引:2
作者
Fang, Xing [1 ]
Wang, Ping [1 ]
Song, Yuyan [1 ]
Yao, Xiangjie [1 ]
Peng, Hao [1 ]
Tang, Xiahui [1 ,2 ]
机构
[1] Huazhong Univ Sci & Technol, Wuhan, Peoples R China
[2] Shenzhen Huazhong Univ, Sci & Technol Res Inst, Shenzhen, Peoples R China
关键词
blue diode laser; external cavity; narrow linewidth; grating; the first-order diffraction efficiency; half-wave plate; FREE TUNING RANGE; CONTINUOUS-WAVE; SYSTEM;
D O I
10.1117/1.OE.61.4.046103
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A high-power external cavity diode laser (ECDL) system at 445 nm is proposed that has narrow-band linewidth emission and adjustable polarization state and can be used for nonlinear frequency conversion in deep ultraviolet spectrum. By introducing a half-wave plate to control the polarization state of the laser source, the first-order diffraction (R-1st) efficiency is changed. The relationship between the linewidth and the first-order diffraction efficiency is discussed through simulation and experiment. In addition, the tunable ranges of the ECDL are measured. Finally, a continuous-wave output with the spectral width of 72 pm at 445 nm and a maximum optical output power of 1.52 W can be obtained when R-1st is 25%, of which the tunable range has a minimum of 2.3 nm. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)
引用
收藏
页数:12
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