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Microstructure-based lasing in GaN/AlGaN separate confinement heterostructures

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Abstract

We report on an experimental study of microstructure-based lasing in an optically pumped GaN/AlGaN separate confinement heterostructure (SCH). We achieved low-threshold ultra-violet lasing in optically pumped GaN/AlGaN separate confinement heterostructures over a wide temperature range. The spacing, directionality, and far-field patterns of the lasing modes are shown to be the result of microcavities that were naturally formed in the structures due to strain relaxation. The temperature sensitivity of the lasing wavelength was found to be twice as low as that of bulk-like GaN films. Based on these results, we discuss possibilities for the development of ultra-violet laser diodes with increased temperature stability of the emission wavelength.

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Authors and Affiliations

  1. Center for Laser and Photonics Research and Department of Physics, Oklahoma State University, Stillwater, OK, 74078, USA

    S. Bidnyk, J. B. Lam, B. D. Little, G. H. Gainer, Y. H. Kwon & J. J. Song

  2. Cree Research, Inc., Durham, NC, 27713, USA

    G. E. Bulman & H. S. Kong

Authors
  1. S. Bidnyk
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  2. J. B. Lam
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  3. B. D. Little
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  4. G. H. Gainer
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  5. Y. H. Kwon
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  6. J. J. Song
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  7. G. E. Bulman
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  8. H. S. Kong
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Bidnyk, S., Lam, J.B., Little, B.D. et al. Microstructure-based lasing in GaN/AlGaN separate confinement heterostructures. MRS Online Proceedings Library 595, 1122 (1999). https://doi.org/10.1557/PROC-595-F99W11.22

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  • DOI: https://doi.org/10.1557/PROC-595-F99W11.22

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