NDLI: Optimal design for improving performance of VCSELs

Content Provider	IEEE Xplore Digital Library
Author	Yongqin Hao Guojun Liu Yuan Feng Lifeng Hou Changling Yan Yingjie Zhao Yuxia Wang
Copyright Year	2010
Description	Author affiliation: National Key Lab of High-Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, 130022, China (Yongqin Hao; Guojun Liu; Yuan Feng; Lifeng Hou; Changling Yan; Yingjie Zhao; Yuxia Wang)
Abstract	A new device structure is reported to improve performance of vertical cavity surface-emitting lasers (VCSELs). Namely many cylindrical holes (CH) or noncontiguous ring trench (NRT) are etched instead of the conventional ring trench (RT). The mesa with such new structure offers radial bridges for current injection, the connecting Ti-Au metal between ohmic contact and bonding pad does not have to cross the ring trench, and it would not cause the connecting metal broken. The 850nm VCSELs with CH have a light output power higher than 10 mW and have a maximum of 12.5 mW at 29.6 mA, 1.34 times as much as those with RT. And the 980nm VCSELs with NRT have a maximum light output power of 28.8 mW at 49.5 mA, 1.6 times as much as those with RT. In addition, these new structure VCSELs also show high-temperature operation characteristics.
Starting Page	93
Ending Page	95
File Size	666498
Page Count	3
File Format	PDF
ISBN	9781424455119
e-ISBN	9781424455133
DOI	10.1109/RCSLPLT.2010.5615393
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantum well Temperature Ring trench(RT) Cavity resonators Laser beams Vertical cavity surface emitting lasers Power generation Vertical-cavity surface-emitting laser Semiconductor laser
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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