ULTRA BRIGHT SURFACE EMISSION FROM A DISTRIBUTED-BRAGG-REFLECTOR HOT-ELECTRON LIGHT EMITTER

Hot electron light emitting and laser semiconductor heterostructure (H ELLISH-1) is a novel surface emitting device. It utilizes longitudinal transport where electric fields heat up electrons and holes in their respective channels simultaneously. Hot electrons and holes are then c aptured by mainly tunnelling and thermionic emission in the quantum we ll where radiative recombination occurs. In this work, we demonstrate and compare the operation of HELLISH-1 and ultrabright HELLISH-1 (UB-H ELLISH-1). The latter is an improved version of HELLISH-1 which incorp orates a distributed Bragg reflector allowing detection of super radia nt emission with a vastly improved full width at half-maximum. It is a lso shown that the emitted light intensity in the UB-HELLISH-1 device is enhanced by about two orders of magnitude compared with the simple structure. (C) 1997 American Institute of Physics.