Abstract
The microcavity laser, with dimensions comparable to its lasing wavelength, has importance both as a means for understanding cavity quantum electrodynamics and as a device with potential applications in communications as well as machine interconnections. Microcavity lasers using organic dyes as the gain medium have been shown to exhibit modified spontaneous emission and an indistinct threshold in output power vs pumping power.1,2 Both of these are unique features of microcavities predicted by cavity QED. The absence of a clear threshold, however, raises the issue of how to distinguish true microcavity lasing from spontaneous emission.
© 1992 Optical Society of America
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