Publications [#61522] of Bobby D Guenther

Papers Published

1. Khoo, I.C. and Wood, M. and Guenther, B.D., Nonlinear liquid crystal optical fiber arrays for all-optical switching/limiting, Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, vol. 2 (1996), pp. 211 - 212, Boston, MA, USA [LEOS.1996.571627]
   (last updated on 2007/04/12)

   Abstract:
   An experiment was carried out to investigate the performance of an optical limiting/protection device which features a liquid crystal fiber array. The fiber core materials, which was made up of isotropic liquid crystal mixture ILC, was doped with a variety of dopant molecules, including an absorbing liquid crystal LC-X and fullerene, to improve its performance. For picosecond laser pulses, the output versus input energy curves for these liquid crystal core materials all exhibit limiting action at rather low threshold, with the clamped output also very low. With optimized dopant concentration and type, other liquid crystals with high two-photon absorption coefficient, much lower threshold and clamped transmission were obtained.

   Keywords:
   Nonlinear optics;Liquid crystals;Laser pulses;Imaging systems;Optical waveguides;Optical sensors;Light absorption;Doping (additives);Fullerenes;Optical instrument lenses;Optical switches;Optical communication;