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High power885 nm laser diodes with graded optical expand structures for small divergence angle
Wang, Jun; Bai, Yiming; Liu, Yuanyuan; He, Weili; Xiong, Cong; Wang, Cuiluan; Feng, Xiaoming; Zhong, Li; Liu, Suping; Ma, Xiaoyu; Wang, J.(wangjun@semi.ac.cn)
2011
Source PublicationHongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN10072276
Volume40Issue:12Pages:2382-2387
AbstractIn order to decrease the generated heat during pumping laser crystals, and enhance the efficiency of optical coupling with pumped materials,885 nm high power laser diodes with small vertical divergence angle were theoretically designed and fabricated. By means of introducing a grade optical expand layer into cladding layers, and combining optimized design the epitaxy material structure, the vertical divergence angle of devices was effectively decreased. AlGalnAs/AlGaAs quantum wells structure was used to increase the compressive strain, optical gain coefficient was enhanced, and material composition and thickness of quantum wells were optimized theoretically. The epitaxy material was prepared by LP-MOCVD technology, and the standard1 cm laser bar was fabricated. Measured results indicate that the vertical divergence angle of devices is decreased to17.6°, the output power and slope efficiency are20.1 W and1.05 W/A respectively, and the corresponding center wavelength is888.2 nm.
metadata_83光电子器件国家工程中心
KeywordEnergy Efficiency Epitaxial Growth High Power Lasers Optimization Pumping(Laser) Quantum Well Lasers Semiconductor Quantum Wells
Subject Area半导体器件
Indexed ByEI
Language中文
Date Available2012-06-14
Document Type期刊论文
Identifierhttp://ir.semi.ac.cn/handle/172111/23099
Collection光电子器件国家工程中心
Corresponding AuthorWang, J.(wangjun@semi.ac.cn)
Recommended Citation
GB/T 7714
Wang, Jun,Bai, Yiming,Liu, Yuanyuan,et al. High power885 nm laser diodes with graded optical expand structures for small divergence angle[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2011,40(12):2382-2387.
APA Wang, Jun.,Bai, Yiming.,Liu, Yuanyuan.,He, Weili.,Xiong, Cong.,...&Wang, J..(2011).High power885 nm laser diodes with graded optical expand structures for small divergence angle.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,40(12),2382-2387.
MLA Wang, Jun,et al."High power885 nm laser diodes with graded optical expand structures for small divergence angle".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 40.12(2011):2382-2387.
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