Optical limiting of submicrowatt long-pulse cw lasers with extremely nonlinear nematic liquid crystal films

Author

Khoo, L.C. ; Guenther, B.D. ; Min-Yi Shih ; Chen, P.H. ; Wood, M.V.

Author_Institution

Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA

fYear

1998

fDate

3-8 May 1998

Firstpage

374

Lastpage

375

Abstract

Summary form only given. We report the demonstration of optical limiting of long-pulse cw lasers using methyl red dye-doped nematic liquid-crystal films in a self-defocusing configuration. The nonlinear mechanism employed is a recently discovered extraordinarily large nonlinear optical effect associated with optically induced liquid-crystal director axis reorientation and the resultant refractive-index change.

Keywords

liquid crystal devices; nematic liquid crystals; optical films; optical limiters; optical self-focusing; organic compounds; refractive index; extraordinarily large nonlinear optical effect; extremely nonlinear nematic liquid crystal films; methyl red dye-doped nematic liquid-crystal films; nonlinear mechanism; optical limiting; optically induced liquid-crystal director axis reorientation; refractive-index change; self-defocusing configuration; submicrowatt long-pulse cw lasers; Fiber nonlinear optics; Laser excitation; Nonlinear optics; Optical films; Optical filters; Optical refraction; Optical sensors; Power lasers; Pump lasers; Ultraviolet sources;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-339-0

Type

conf

DOI

10.1109/CLEO.1998.676330

Filename

676330