Ultralow-threshold graded-index separate-confinement single quantum well buried heterostructure (Al,Ga)As lasers with high reflectivity coatings

Derry, Pamela L.; Yariv, Amnon; Lau, Kam Y.; Bar-Chaim, Nadav; Lee, Kevin; Rosenberg, Jan
June 1987
Applied Physics Letters;6/22/1987, Vol. 50 Issue 25, p1773
Academic Journal
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 μm, and an active region stripe width of 1 μm.


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