Open AccessMid-infrared Cr^2+:ZnSe random powder lasers
Author(s) -
C. Kim,
Dmitry Martyshkin,
Vladimir V. Fedorov,
Sergey Mirov
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.004952
Subject(s) - materials science , laser , optics , infrared , raman spectroscopy , quartz , crystal (programming language) , grain size , ampoule , radiation , optoelectronics , composite material , physics , computer science , programming language
We report simple methods of laser active Cr2+:ZnSe powder fabrication with average grain sizes of either approximately 10 or approximately 1 microm without crystal growth stage. Pure, uniformly mixed ZnSe and CrSe powders annealed at 1000 masculineC for 3 days in a sealed evacuated (approximately 10(-4) Torr) quartz ampoule exhibited middle-infrared laser action at room temperature under 1.56 microm excitation of D(2) Raman shifted radiation of Nd:YAG laser. The output-input characteristic clearly demonstrated the threshold-like behavior of the output signal with the threshold energy level of 0.5 and 3 mJ in 2.9 mm spot for 10 and 1 microm grain sizes, respectively.