NDLI: Effects of well number on temperature characteristics in 1.3-/spl mu/m AlGaInAs-InP quantum-well lasers

Content Provider	IEEE Xplore Digital Library
Author	Wada, H. Takemasa, K. Munakata, T. Kobayashi, M. Kamijoh, T.
Copyright Year	1995
Abstract	Effects of well number on temperature characteristics have been investigated in 1.3-/spl mu/m AlGaInAs-InP compressively strained multiple-quantum-well lasers. Well-number dependence of threshold currents (I/sub th/), external quantum efficiencies (/spl eta//sub d/), characteristic temperatures of I/sub th/ and /spl eta//sub d/ arid maximum operation temperatures have been experimentally determined and analyzed. The characteristic temperature of the threshold current (T/sub 0/) and the maximum operation temperature (T/sub max/) were found to increase with increasing the number of quantum wells and a record high pulsed T/sub max/ of 220/spl deg/C has been achieved in lasers with ten wells. In contrast, the characteristic temperature of the external efficiency (T/sub /spl eta//) was found to decrease with increasing the number of wells. Because of this opposite well-number dependence of the T/sub 0/ and T/sub /spl eta//, each of them alone is not necessarily a good measure to optimize the number of wells. Therefore, in this work, me also evaluated a power reduction at a constant current with increasing temperature, which depends on both T/sub 0/ and T/sub /spl eta// and thus should be a more practical measure of the temperature characteristics, and discuss the optimum number of the quantum wells.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	420
Ending Page	427
Page Count	8
File Size	204156
File Format	PDF
ISSN	1077260X
Volume Number	5
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantum wells Quantum well lasers Temperature dependence Quantum well devices Threshold current Temperature measurement Semiconductor lasers Optical pulses Current measurement Power measurement
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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