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Emission characteristics of a spiral-shaped microcavity laser with a waveguide

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Abstract

We investigate the emission characteristics of whispering-gallery-type modes (WGTMs) in a spiral-shaped InGaAsP semiconductor microcavity laser with a waveguide, connected to the notch. When the boundary of the cavity is selectively pumped by using cw current injection, WGTMs are launched to the waveguide and then are emitted in two directions from the waveguide in a far-field pattern. By observing the far-field pattern and the emission spectra, we identify the characteristics of the WGTMs launched to the waveguide. The emission spectra show that the two directions are caused by different WGTMs.

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Authors and Affiliations

  1. Department of Physics, Sogang University, Seoul, 121-742, Korea

    Myung Woon Kim, Chang Hwan Yi & Chil Min Kim

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  1. Myung Woon Kim
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  2. Chang Hwan Yi
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  3. Chil Min Kim
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Correspondence to Chil Min Kim.

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Kim, M.W., Yi, C.H. & Kim, C.M. Emission characteristics of a spiral-shaped microcavity laser with a waveguide. Journal of the Korean Physical Society 60, 750–753 (2012). https://doi.org/10.3938/jkps.60.750

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  • DOI: https://doi.org/10.3938/jkps.60.750

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