Y. Yamamoto et al., QUANTUM STATE CONTROL IN SEMICONDUCTOR-PN-JUNCTIONS .2. CONTROLLED SPONTANEOUS EMISSION IN QUANTUM-WELL MICROCAVITY LASERS, International journal of modern physics b, 7(8), 1993, pp. 1653-1695
The principles and applications of controlled spontaneous emission in
semiconductor microcavities are reviewed. The coupling efficiency of s
pontaneous emission into a lasing mode and the spontaneous emission ra
te can be modified by various microcavity structures. By increasing th
e coupling efficiency, semiconductor lasers with a very low threshold
current, and semiconductors lasers and light emitting diodes with a hi
gh quantum efficiency, broad modulation bandwidth and low noise are ex
pected.