This article is cited in 7 papers

Semiconductor physics

Mode structure of laser emission from ZnO nanorods with one metal mirror

A. N. Gruzintsev^a, G. A. Emel'chenko^b, A. N. Redkin^a, V. T. Volkov^a, E. E. Yakimov^a, G. Visimberga<sup>c

a</sup> Institute of Microelectronics Technology and High-Purity Materials RAS
^b Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
^c Tyndall National Institute, University College Cork, Cork, Ireland

Abstract: 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.

Received: 26.01.2010
Accepted: 05.02.2010

 English version: Semiconductors, 2010, 44:9, 1235–1240

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