Ultralow‐threshold graded‐index separate‐confinement single quantum well buried heterostructure (Al,Ga)As lasers with high reflectivity coatings
作者:
Pamela L. Derry,
Amnon Yariv,
Kam Y. Lau,
Nadav Bar‐Chaim,
Kevin Lee,
Jan Rosenberg,
期刊:
Applied Physics Letters
(AIP Available online 1987)
卷期:
Volume 50,
issue 25
页码: 1773-1775
ISSN:0003-6951
年代: 1987
DOI:10.1063/1.97742
出版商: AIP
数据来源: AIP
摘要:
Unlike conventional semiconductor lasers, single quantum well lasers with high reflectively coatings have dramatically reduced threshold currents as a result of the smaller volume of the (active) quantum well region. A cw threshold current of 0.95 mA was obtained for a buried graded‐index separate‐confinement heterostructure single quantum well laser with facet reflectivities of ∼70%, a cavity length of 250 &mgr;m, and an active region stripe width of 1 &mgr;m.
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