Browse Prior Art Database

SUPPRESSION OF UNDESIRED LATERAL LASER OSCILLATION

IP.com Disclosure Number: IPCOM000025578D
Original Publication Date: 1986-Apr-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

As an array of lasers becomes large, say 40 or more parallel emitters in a single array laser, there is an increasing tendency for the array laser to begin to lase in a direction perpendicular to the contact stripes of the array laser. This is also referred to as "edge-to-edge" laser operation. One way to eliminate this from occurring is to provide large unpumped end regions on these wide laser arrays in order to suppress this unwanted oscillation. These unpumped regions will absorb the edge-to-edge radiation or light. As a rule, the width of the unpumped regions at either end of the array contact stripes should be about one-half the length of the array to ensure that laser oscillation will only occur in the direction parallel with the contact stripe geometry,