Title :
Phototunable sub-wavelength grating and 3D photonic crystal infiltrated with photosensitive nonlinear liquid crystal
Author :
Shishido, A. ; Divliansky, I.B. ; Nishimura, S. ; Egan, G.L. ; Wood, M.V. ; Min-Yi Shih ; Iam Choon Khoo ; Mallouk, K.E. ; Mayer, T.S.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Summary form only given. Nematic liquid crystals (NLC) possess very broadband birefringence and transparency [from 400 nm to 20 /spl mu/m], and extraordinarily large optical nonlinearity. Conventional methods of aligning NLCs employ surfactant and rubbed polymer coating on the cell windows. In this presentation, we demonstrate that similar aligning action may also be engendered by surface relief [1D and 2D] gratings inscribed on the glass windows. Furthermore, these cells exhibit all-optical diffraction capability.
Keywords :
diffraction gratings; molecular orientation; nematic liquid crystals; nonlinear optics; optical tuning; photonic band gap; refractive index; 3D photonic crystal; aligning action; all-optical diffraction capability; colloidal crystal; glass windows; intensity dependent refractive index; nematic liquid crystals; nonlinear diffraction element; photosensitive nonlinear liquid crystal; phototunable subwavelength grating; surface relief gratings; transmission spectrum; Birefringence; Glass; Gratings; Liquid crystal polymers; Liquid crystals; Optical diffraction; Optical polymers; Photonic crystals; Polymer films; Windows;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947508
