Room-temperature operation of GaAs Bragg-mirror lasers

Abstract
Room‐temperature operation of GaAs distributed Bragg reflector lasers is reported. The diodes are fabricated from conventional double heterostructures involving only a single step of liquid‐phase epitaxy. For gratings with a period of 3700 Å, the diodes lased at 8770 Å, which corresponds to the high‐absorption side of the spontaneous emission spectrum. Thresholds as low as 6 kA/cm2 have been realized.