Title :
Ultrafast nonlinear optical effect in CuInS2xSe2(1-x)-doped glasses
Author :
Mikhailov, V.P. ; Yumashev, K.V. ; Prokoshin, P.V. ; Jmako, S.P. ; Bodnar, I.V.
Author_Institution :
Int. Laser Center, Belarus State Univ., Minsk, Byelorussia
Abstract :
We present the experimental studies on ultrafast relaxation of carriers in CuInS2xSe2(1-x)-doped glasses under picosecond excitation. We report on transient change of absorption observed in pump-probe experiments and dependence of transmission on the input intensity obtained from a single-beam measurement. Using the laser pulses (15 ps) at 1.15 eV we have studied transient absorption change as a function of excitation intensity. Samples of glasses containing CulnS 2xSe2(1-x) microcrystals with four different values of bandgap (1.06; 1.04; 1.17; 1.22 eV) are selected. The mean crystal diameter in our samples was 5-15 nm
Keywords :
copper compounds; energy gap; high-speed optical techniques; indium compounds; nonlinear optics; optical saturable absorption; semiconductor doped glasses; ternary semiconductors; time resolved spectra; 1.06 to 1.22 eV; CuIn(SSe)2; CuInS2xSe2(1-x)-doped glasses; bandgap; picosecond excitation; semiconductor; transient change of absorption; ultrafast nonlinear optical effect; ultrafast relaxation; Absorption; Glass; Laser excitation; Laser transitions; Nonlinear optics; Optical pulses; Optical pumping; Photonic band gap; Pump lasers; Ultrafast optics;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 1994. NLO '94 IEEE
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1473-5
DOI :
10.1109/NLO.1994.470821
