Title :
Laser-induced grating in ZnO
Author_Institution :
Phys. Lab., Tech. Univ. of Denmark, Lyngby, Denmark
fDate :
1/1/1992 12:00:00 AM
Abstract :
A simple approach for the calculation of self-diffraction in a thin combined phase and amplitude grating is presented. The third order nonlinearity, the electron-hole recombination time, and the ambipolar diffusion coefficient in a ZnO crystal are measured by means of laser-induced self-diffraction and self-defocusing. It is shown that the index of refraction changes linearly with light intensity and that the intensity dependence of the index of refraction is caused by generation of an electron-hole plasma
Keywords :
diffraction gratings; light diffraction; optical self-focusing; refractive index; solid-state plasma; zinc compounds; ZnO; ambipolar diffusion coefficient; amplitude grating; electron-hole plasma; electron-hole recombination time; index of refraction; intensity dependence; laser-induced gratings; laser-induced self-diffraction; light intensity; phase grating; self-defocusing; self-diffraction; third order nonlinearity; Diffraction gratings; Laser theory; Nonlinear optics; Optical diffraction; Optical interconnections; Optical refraction; Optical signal processing; Spontaneous emission; Time measurement; Zinc oxide;
Journal_Title :
Quantum Electronics, IEEE Journal of
