Email this article Spectrum Improvement of a High-Power Broad-Area Laser Diode Based on a Grating Semi-Feedback External Cavity Scheme
- Authors: Wang Y.1, Wang H.1, Chen Y.1, He W.1, Fan R.2, Lv Z.1
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Affiliations:
- National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
- Department of Chemistry, Harbin Institute of Technology
- Issue: Vol 37, No 3 (2016)
- Pages: 302-307
- Section: Article
- URL: https://journal-vniispk.ru/1071-2836/article/view/247876
- DOI: https://doi.org/10.1007/s10946-016-9576-6
- ID: 247876
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Abstract
We propose a grating semi-feedback external cavity (GSFEC) scheme for high-power broad-area laser diodes for improving the spectrum characteristics of high-power semiconductor lasers. We design this scheme as two crossed cylindrical resonators employing a holographic diffraction grating and a rectangular highly reflecting mirror. In our experiments, we obtain stable spectrum characteristics over a tuning range of 5 nm, with maximum output power up to 764 mW at an operating current of 3.5 A. The wavelength drift rate with injection current decreases from 0.59 nm/A of free-running condition to 0.2 nm/A, and the laser bandwidth is compressed to 21.5% at 2 A.
About the authors
Yu-Lei Wang
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
Author for correspondence.
Email: wyl@hit.edu.cn
China, Harbin, 150080
Hong-Li Wang
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
Email: wyl@hit.edu.cn
China, Harbin, 150080
Yi Chen
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
Email: wyl@hit.edu.cn
China, Harbin, 150080
Wei-Ming He
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
Email: wyl@hit.edu.cn
China, Harbin, 150080
Rui-Qing Fan
Department of Chemistry, Harbin Institute of Technology
Email: wyl@hit.edu.cn
China, Harbin, 150001
Zhi-Wei Lv
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology
Email: wyl@hit.edu.cn
China, Harbin, 150080
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