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

Volume

29

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

2972

Lastpage

2976

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.259414

Filename

259414