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Nonlinear Optical Properties of CuS Nanocrystals with Modified Surface

Published online by Cambridge University Press:  15 February 2011

K. V. Yumashev ,
V. P. Mikhailov ,
A. M. Malyarevich ,
P. V. Prokoshin ,
V. S. Gurin  and
M. V. Artemyev
K. V. Yumashev
Affiliation:
International Laser Center, Belarus State Polytechnic Academy, F. Skaryna av., 65, bld. 17, Minsk 220027, Belarus, 375 (172) 326286
V. P. Mikhailov
Affiliation:
International Laser Center, Belarus State Polytechnic Academy, F. Skaryna av., 65, bld. 17, Minsk 220027, Belarus, 375 (172) 326286
A. M. Malyarevich
Affiliation:
International Laser Center, Belarus State Polytechnic Academy, F. Skaryna av., 65, bld. 17, Minsk 220027, Belarus, 375 (172) 326286
P. V. Prokoshin
Affiliation:
International Laser Center, Belarus State Polytechnic Academy, F. Skaryna av., 65, bld. 17, Minsk 220027, Belarus, 375 (172) 326286
V. S. Gurin
Affiliation:
Physico-Chemical Research Institute of Belarus State University, Minsk 220080, Belarus
M. V. Artemyev
Affiliation:
Physico-Chemical Research Institute of Belarus State University, Minsk 220080, Belarus
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Abstract

Nonlinear bleaching and induced absorption effects in CuS microcrystals with modified (after oxidation) surface have been studied. Relaxation times of these processes demonstrate two components - fast (˜ 80 ps) and slow (>>500 ps). Energy level scheme for explanation of these phenomena was proposed. Appearance of bleaching effect in CuS microcrystals due to surface oxidation makes them as perspective materials for saturable absorbers for pico- and femtosecond lasers.

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