Terahertz beat frequency generation from two-mode lasing operation of coupled microdisk laser

We propose a coupled microdisk laser as a compact and tunable laser source for the generation of a coherent continuous-wave terahertz radiation by photomixing. Using the Schrödinger-Bloch model including the nonlinear effect of active medium, we find single-mode and two-mode lasings depending on the...

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Bibliographic Details
Published inOptics letters Vol. 37; no. 15; p. 3210
Main Authors Ryu, Jung-Wan, Cho, Jinhang, Kim, Chil-Min, Shinohara, Susumu, Kim, Sang Wook
Format Journal Article
LanguageEnglish
Published United States 01.08.2012
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Summary:We propose a coupled microdisk laser as a compact and tunable laser source for the generation of a coherent continuous-wave terahertz radiation by photomixing. Using the Schrödinger-Bloch model including the nonlinear effect of active medium, we find single-mode and two-mode lasings depending on the pumping strength. We explain the transitions of lasing modes in terms of resonant modes that are the solutions of the Schrödinger-Bloch model without active medium and nonlinear interaction. In particular, a two-mode lasing is shown to generate a terahertz oscillating frequency originating from the light beating of two nearly degenerated resonant modes with different symmetries.
ISSN:1539-4794
DOI:10.1364/ol.37.003210