Title :
Dynamics of transient probe beam amplification via coherent multiwave mixing in a local nonlinear medium-nematic liquid crystal
Author :
Khoo, I.C. ; Zhou, Ping ; Liang, Yu ; Li, Hong
Author_Institution :
Dept. of Electr. & Comput. Eng., Pennsylvania State Univ., University Park, PA, USA
fDate :
12/1/1993 12:00:00 AM
Abstract :
The dynamics of the transient thermal-grating-mediated probe-beam amplification effect in a nematic liquid crystal film is studied with the use of millisecond laser pulses. These experimental observations and the accompanying transient multiwave mixing analysis show that peak probe gain can occur at various locations within the grating decay time; the higher the induced index change, the sooner will peak gain occur
Keywords :
diffraction gratings; multiwave mixing; nematic liquid crystals; optical films; refractive index; coherent multiwave mixing; grating decay time; induced index change; local nonlinear medium-nematic liquid crystal; millisecond laser pulses; nematic liquid crystal film; peak probe gain; transient multiwave mixing analysis; transient probe beam amplification; transient thermal-grating-mediated probe-beam amplification effect; Diffraction; Gratings; Laser beams; Laser excitation; Liquid crystals; Multiwave mixing; Optical coupling; Probes; Pulse amplifiers; Transient analysis;
Journal_Title :
Quantum Electronics, IEEE Journal of
