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Optical beam induced current microscopy of photonic quantum ring lasers

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Abstract

A confocal laser scanning microscope modified to acquire optical beam induced current images is used to investigate a novel type of semiconductor lasers—photonic quantum ring lasers. We compare the lasing and the photoinduced current images of the structures and analyze their behavior when changing the excitation wavelength. We report the optimal excitation conditions in terms of excitation laser wavelength for collecting the highest photocurrent signal and hence highlighting the photonic quantum ring behavior of the lasers.

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Authors and Affiliations

  1. Center for Microscopy-Microanalysis and Information Processing, University Politehnica Bucharest, 313 Splaiul Independentei Street, sect. 6, Bucharest, Romania

    R. Hristu, S. G. Stanciu & G. A. Stanciu

  2. Institute of Biophotonics, National Yang-Ming University, Taipei, 11221, Taiwan

    S. J. Wu & F.-J. Kao

  3. Department of Electrical Engineering, POTECH—Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea

    O’D. Kwon

Authors
  1. R. Hristu
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  2. S. G. Stanciu
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  3. S. J. Wu
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  4. F.-J. Kao
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  5. O’D. Kwon
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  6. G. A. Stanciu
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Correspondence to R. Hristu.

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Hristu, R., Stanciu, S.G., Wu, S.J. et al. Optical beam induced current microscopy of photonic quantum ring lasers. Appl. Phys. B 103, 653–657 (2011). https://doi.org/10.1007/s00340-011-4441-3

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  • DOI: https://doi.org/10.1007/s00340-011-4441-3

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