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Proceedings Paper

Low threshold 980-nm tunable vertical-cavity surface-emitting lasers
Author(s): Guo-Zhu Shi; Bao-Lu Guan; Xia Guo; Shuo Li; Qiang Wang; Guang-Di Shen
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Paper Abstract

Low threshold, continuous wavelength tuning micro-electro-mechanically system (MEMS) tunable vertical-cavity surface-emitting lasers (VCSELs) operating at 980 nm are demonstrated. The device utilizes the two-chip concept with a MEMS membrane mirror suspended by an air gap above a VCSEL amplifier. Output power of 4.56 mW with 14μm diameter oxide aperture in continuous operation and tuning range of 6.8nm are obtained. Due to the low optical loss in resonance cavity results in threshold current as low as 0.6 mA at room temperature. Theoretical calculation for the threshold gain as a function of the wavelength and air gap is obtained respectively, which provides the design strategies to improve device performance.

Paper Details

Date Published: 29 November 2012
PDF: 8 pages
Proc. SPIE 8552, Semiconductor Lasers and Applications V, 85520R (29 November 2012); doi: 10.1117/12.999410
Show Author Affiliations
Guo-Zhu Shi, Beijing Univ. of Technology (China)
Bao-Lu Guan, Beijing Univ. of Technology (China)
Xia Guo, Beijing Univ. of Technology (China)
Shuo Li, Beijing Univ. of Technology (China)
Qiang Wang, Beijing Univ. of Technology (China)
Guang-Di Shen, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 8552:
Semiconductor Lasers and Applications V
Ning Hua Zhu; Jinmin Li; Frank H. Peters; Changyuan Yu, Editor(s)

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