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Title: Visible-wavelength semiconductor lasers and arrays

A visible semiconductor laser. The visible semiconductor laser includes an InAlGaP active region surrounded by one or more AlGaAs layers on each side, with carbon as the sole p-type dopant. Embodiments of the invention are provided as vertical-cavity surface-emitting lasers (VCSELs) and as edge-emitting lasers (EELs). One or more transition layers comprised of a substantially indium-free semiconductor alloy such as AlAsP, AlGaAsP, or the like may be provided between the InAlGaP active region and the AlGaAS DBR mirrors or confinement layers to improve carrier injection and device efficiency by reducing any band offsets. Visible VCSEL devices fabricated according to the invention with a one-wavelength-thick (1.lambda.) optical cavity operate continuous-wave (cw) with lasing output powers up to 8 mW, and a peak power conversion efficiency of up to 11%.
Inventors:
 [1];  [1]
  1. (Albuquerque, NM)
Issue Date:
OSTI Identifier:
870607
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
Patent Number(s):
US 5557627
Contract Number:
AC04-94AL85000
Research Org:
SANDIA CORP
Country of Publication:
United States
Language:
English
Subject:
visible-wavelength; semiconductor; lasers; arrays; visible; laser; inalgap; active; region; surrounded; algaas; layers; carbon; sole; p-type; dopant; embodiments; provided; vertical-cavity; surface-emitting; vcsels; edge-emitting; eels; transition; comprised; substantially; indium-free; alloy; alasp; algaasp; dbr; mirrors; confinement; improve; carrier; injection; device; efficiency; reducing; band; offsets; vcsel; devices; fabricated; according; one-wavelength-thick; lambda; optical; cavity; operate; continuous-wave; cw; lasing; output; powers; mw; peak; power; conversion; 11; cavity surface; surface-emitting laser; algaas layer; transition layer; vertical-cavity surface-emitting; semiconductor laser; power conversion; active region; optical cavity; conversion efficiency; output power; peak power; surface-emitting lasers; p-type dopant; semiconductor alloy; gaas layer; semiconductor lasers; type dopant; output powers; emitting laser; fabricated according; edge-emitting lasers; visible semiconductor; emitting lasers; algaas layers; devices fabricated; /372/

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