Ultralow-threshold graded-index separate-confinement single quantum well buried heterostructure (Al,Ga)As lasers with high reflectivity coatings
- 22 June 1987
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 50 (25), 1773-1775
- https://doi.org/10.1063/1.97742
Abstract
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.Keywords
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