Microwave characterization of Purcell enhancement in a microcavity laser

H. W. Then, C. H. Wu, M. Feng, N. Holonyak

Research output: Contribution to journalArticlepeer-review


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).

Original languageEnglish (US)
Article number131107
JournalApplied Physics Letters
Issue number13
StatePublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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