Copper Chloride Nonlinear Optical Absorption under Quantum Confinement

Abstract

Abstract With the aid of two independently tunable lasers the influence has been studied of optical excitation on light absorption in the Z3-band of CuCl crystals with size 25–75 Å in a glass matrix. It has been found that resonance pumping leads to a significant blue shift of the band caused by the interaction of excitations under quantum confinement. Interband excitation with intensity up to 0·3 GW cm−2 does not affect the exciton absorption.