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Title: Visible light emitting vertical cavity surface emitting lasers

A vertical cavity surface emitting laser that emits visible radiation is built upon a substrate, then having mirrors, the first mirror on top of the substrate; both sets of mirrors being a distributed Bragg reflector of either dielectrics or other materials which affect the resistivity or of semiconductors, such that the structure within the mirror comprises a plurality of sets, each having a thickness of .lambda./2n where n is the index of refraction of each of the sets; each of the mirrors adjacent to spacers which are on either side of an optically active bulk or quantum well layer; and the spacers and the optically active layer are from one of the following material systems: In.sub.z (Al.sub.y Ga.sub.1-y).sub.1-z P, InAlGaAs, AlGaAs, InGaAs, or AlGaP/GaP, wherein the optically active region having a length equal to m .lambda./2n.sub.eff where m is an integer and n.sub.eff is the effective index of refraction of the laser cavity, and the spacer layer and one of the mirrors being transmissive to radiation having a wavelength of .lambda./n, typically within the green to red portion of the visible spectrum.
Inventors:
 [1];  [1];  [2];  [2]
  1. (Boulder, CO)
  2. (Albuquerque, NM)
Issue Date:
OSTI Identifier:
869954
Assignee:
United States of America as represented by United States (Washington, DC) SNL
Patent Number(s):
US 5428634
Contract Number:
AC04-76DP00789
Research Org:
AT & T CORP
Country of Publication:
United States
Language:
English
Subject:
visible; light; emitting; vertical; cavity; surface; lasers; laser; emits; radiation; built; substrate; mirrors; mirror; top; sets; distributed; bragg; reflector; dielectrics; materials; affect; resistivity; semiconductors; structure; comprises; plurality; thickness; lambda; 2n; index; refraction; adjacent; spacers; optically; active; bulk; quantum; layer; following; material; systems; z; 1-y; 1-z; inalgaas; algaas; ingaas; algap; gap; region; length; equal; eff; integer; effective; spacer; transmissive; wavelength; typically; green; portion; spectrum; cavity surface; bragg reflector; laser cavity; active region; visible light; active layer; light emitting; optically active; vertical cavity; surface emitting; visible radiation; emitting laser; distributed bragg; spacer layer; emitting lasers; material systems; /372/