Accession Number : ADA299585

Title :   UV, Blue and Green Vertical Cavity Lasers.

Descriptive Note : Technical rept.,

Corporate Author : OPTICAL CONCEPTS INC LOMPOC CA

Personal Author(s) : Peters, Frank H.

PDF Url : ADA299585

Report Date : 30 NOV 1994

Pagination or Media Count : 13

Abstract : Many potential military and commercial applications exist for compact visible lasers, such as high density storage and readout, and high definition, high brightness displays. At present there are no reliable compact laser sources available operating at shorter wavelengths than red. Blue and green lasers using II-VI materials been demonstrated but only last a few minutes at best. New developments in material growth, fabrication and laser device design have made near UV, blue and green semiconductor lasers a realistic possibility. In particular, vertical cavity lasers (VCLs) have some inherent properties which allow for the formation of these visible lasers. Vertical cavity lasers can be used to form efFicient frequency doubling structures. Vertical cavity lasers have been made which operate CW at room temperature at wavelengths from 650 to 1050 nm., therefore it is possible to produce second harmonic light at wavelengths between 325 and 525 nm. Efficient internal second harmonic conversion is made possible in a vertical cavity laser structure for two major reasons. First the structures can be made with near 100% reflectors so that the photon density is extremely high inside the cavity, and second the mirrors inherently transmit at the second harmonic. (MM)

Descriptors :   *LASER CAVITIES, *ULTRAVIOLET LASERS, SECOND HARMONIC GENERATION, GALLIUM ARSENIDES, ALUMINUM GALLIUM ARSENIDES, FABRICATION, SEMICONDUCTOR LASERS, EPITAXIAL GROWTH, SEMICONDUCTOR DIODES, RESONANCE, BLUE(COLOR), GREEN(COLOR), LIGHT EMITTING DIODES, CONTINUOUS WAVE LASERS.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE