Single longitudinal mode external cavity blue InGaN diode laser

被引：17

作者：

Chen, Ming-Hui ^{[1
,2
]}

Hsiao, Shih-Chieh ^{[1
]}

Shen, Kuan-Ting ^{[1
]}

Tsai, Chin-Chun ^{[1
,3
]}

Chui, Hsiang-Chen ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Photon, Tainan 70101, Taiwan

[2] Met Ind Res & Dev Ctr, Med Devices & Optoelect Equipment Dept, Kaohsiung 81160, Taiwan

[3] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

来源：

OPTICS AND LASER TECHNOLOGY | 2019年 / 116卷

关键词：

Single frequency; Diode lasers; Tunable lasers;

D O I：

10.1016/j.optlastec.2019.03.022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a 445-nm InGaN blue diode laser in wavelength-tunable Littrow-type external cavity with a single longitudinal mode output, and a linewidth of 4.7 MHz. Its tuning range was estimated at 4 nm. The maximum output power was up to 20 mW, and the slope efficiency was approximately 0.36 W/A. The external cavity-diode laser linewidth was measured as 4.7 MHz with a lasing threshold to 8.1 MHz at higher applied current. The slope of the linewidth broadening with applied currents was calculated as 57 kHz/mA. And the wavelength tuning range was approximately 4.3 nm at low applied current and narrowed to approximately 2.6 nm at high applied current. A blue external cavity diode laser can deliver a single frequency beam within entire operation range.

引用

页码：68 / 71

页数：4

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