Journal
SEMICONDUCTORS
Volume 44, Issue 9, Pages 1235-1240Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063782610090228
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Funding
- Russian Foundation for Basic Research [10-02-00035, 07-02-92176]
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The effect of the length of ZnO nanorods (500 nm in diameter) on the mode structure of their lasing in the ultraviolet spectral region is studied by optical luminescence microscopy. It is shown that separate nanorods with a metal mirror at one of the end faces exhibit only two or three laser modes at small nanoresonator lengths (8-20 mu m). The different optical losses of longitudinal and transverse waveguide modes are established for nanorods lying on a glass substrate. An increase in the optical Q factor and a decrease in the lasing thresholds can be attributed to optical reflection from the metal mirror at the end face of the nanorod.
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