Title :
Transient gratings in InSb at two-photon excitation
Author :
K. Jarasiunas;S. Stonys;E. Sirmulis
Author_Institution :
Department of Semiconductor Physics, Vilnius V. Kapsukas State University, Lithuanian SSR, U.S.S.R.
Abstract :
We report a study of transient phase grating in InSb at room temperature induced by two-photon absorption of pulsed CO<2laser radiation. From our results, we deduce a value of the ambipolar diffusion coefficientD \simeq 26cm2. s-1and of the lifetime of carriersT_{R} \simeq 54ns. The behavior of the grating and the change of refractive index confirms the free-carrier plasma being dominant in the modulation of nonlinear optical properties.
Keywords :
"Gratings","Plasma properties","Optical modulation","Laser excitation","Plasma temperature","Absorption","Optical pulses","Refractive index","Nonlinear optics","Optical refraction"
Journal_Title :
IEEE Journal of Quantum Electronics
DOI :
10.1109/JQE.1986.1073103
