Gain characteristics of 1.3 μm compressively strained MQW lasers at high temperature

Yidong Huang, Hirohito Yamada, Yoshihiro Sasaki, Toshitaka Toriaki, Toshio Uji

Research output: Chapter in Book/Report/Conference proceedingChapter


With an aim toward low drive current operation of 1.3 μm InGaAsP/InP MQW lasers at high temperature, fundamental device parameters of compressively strained MQW structures were measured at 85°C. Increased gain coefficient and reduced transparency current density are obtained for the compressively strained quantum well. As the compressive strain increases, the internal quantum efficiency is increased, while the internal loss tends to increase. Using the parameters obtained, the device structures were optimized to realize low drive current at high temperature. A low threshold current of less than 5 mA and the record operation current as low as 20 mA under 5 mW output power were obtained for the LD at 85°C.

Original languageEnglish
Title of host publicationNEC Research & Development
Number of pages5
Publication statusPublished - 1995 Oct 1
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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