Microwave characterization of Purcell enhancement in a microcavity laser

Then, H. W.; Wu, C. H.; Feng, M.; Holonyak, Jr., N.
March 2010
Applied Physics Letters;3/29/2010, Vol. 96 Issue 13, p131107
Academic Journal
A sensitive microwave method is described to study the optical frequency response of a microcavity laser, demonstrating that a quantum-well vertical cavity surface-emitting laser (∼3 μm aperture, ITH=180 μA) can exhibit almost single mode operation (nearly threshold free), and an electron-hole spontaneous lifetime Purcell enhancement of 2.08 times. The microwavemeasurement method employing electrical-to-optical conversion, and distinct separation of electrical input and optical output, is more revealing than photoluminescence decay experiments (and the inconvenient overlap of optical input and output).


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