James Robert Lott

US Patent:

54286344, Jun 27, 1995

Filed:

Nov 5, 1992

Appl. No.:

7/972820

Inventors:

Robert P. Bryan - Boulder CO
Gregory R. Olbright - Boulder CO
James A. Lott - Albuquerque NM
Richard P. Schneider - Albuquerque NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01S 319

US Classification:

372 45

Abstract:

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.