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

来源：

OPTICAL ENGINEERING | 2022年 / 61卷 / 04期

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

页数：12

共 19 条

[1] HIGH-POWER CW UV AR++ LASER WITH A TRANSVERSE GAS-FLOW [J].