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Method for Preparation of Semiconductor Quantum‐Rod Lasers in a Cylindrical Microcavity
Author(s) -
Kazes M.,
Lewis D. Y.,
Banin U.
Publication year - 2004
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200400018
Subject(s) - lasing threshold , materials science , whispering gallery wave , laser , optoelectronics , capillary action , semiconductor , nanosecond , optics , quantum optics , resonator , composite material , physics , wavelength
An efficient method for preparation of semiconductor quantum rod films for robust lasing in a cylindrical microcavity is reported. A capillary tube, serving as the laser cavity, is filled with a solution of nanocrystals and irradiated with a series of intense nanosecond laser pulses to produce a nanocrystal film on the capillary surface. The films exhibit intense room‐temperature lasing in whispering‐gallery modes that develop at the film–capillary interface as corroborated from the spacing detected for the lasing modes. Good lasing stability is observed at moderate pump powers. The method was applied successfully to several quantum‐rod samples of various sizes.