Optical beam induced current microscopy of photonic quantum ring lasers

R. Hristu*, S. G. Stanciu, S. J. Wu, F. J. Kao, O'D Kwon, G. A. Stanciu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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.

Original languageEnglish
Pages (from-to)653-657
Number of pages5
JournalApplied Physics B: Lasers and Optics
Issue number3
StatePublished - Jun 2011


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