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Some optical properties of Ge-S amorphous thin films
M. Munzar,L. Tich?,H. Tich? 한국물리학회 2002 Current Applied Physics Vol.2 No.3
Amorphous GexS1. x lms (x ¼ 0:27, 0.32, 0.36 and0.4) were preparedby thermal evaporation. The values of the refractive index,the optical gap and the parameters of the WempleDiDomenico single oscillator model were determined. Using Miller’s generalizedrule the values of the third-order non-linear susceptibility were also estimated. Thermally induced bleaching was observed for lmsstudied. Photobleaching was observed for sulfur rich and nearly stoichiometric lms (x ¼ 0:27, 0.32) while for a germanium rich lm(x ¼ 0:states andto an overall network rigidity of the lms.. 2002 Elsevier Science B.V. All rights reserved.