Title :
Enhanced spontaneous emission using quantum dots and an apertured microcavity
Author :
Deppe, D.G. ; Graham, L.A. ; Huffaker, D.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
fDate :
10/1/1999 12:00:00 AM
Abstract :
Spontaneous emission characteristics from apertured microcavities are studied using quantum-dot light emitters. Spatial averaging over the emitter positions within the apertures significantly impacts the measured lifetime changes, but lifetime changes due to the aperture modes are still readily observed. A maximum increase of a factor of ~2.5 over the cavity-free emission rate is measured. We argue that, for a narrow bandwidth emitter, the microcavity enhancement can lead to nearly-single-mode and high-speed operation even in the spontaneous regime
Keywords :
micro-optics; photoluminescence; radiative lifetimes; semiconductor quantum dots; spontaneous emission; aperture modes; apertured microcavity; cavity-free emission rate; emitter positions; enhanced spontaneous emission; high-speed operation; lifetime changes; microcavity enhancement; narrow bandwidth emitter; nearly-single-mode operation; quantum dots; quantum-dot light emitters; spontaneous emission characteristics; spontaneous regime; Apertures; Laser feedback; Light emitting diodes; Microcavities; Optical arrays; Optical fibers; Quantum dots; Semiconductor laser arrays; Spontaneous emission; US Department of Transportation;
Journal_Title :
Quantum Electronics, IEEE Journal of
