Title :
Improved photorefractive time response in ferroelectric tungsten bronze crystals
Author :
Clark, William W., III ; Miller, Mary J. ; Wood, Gary L. ; Mott, Andrew G. ; Sharp, Edward J. ; Salamo, Gregory J. ; Monson, Brian D. ; Neurgaonkar, Ratnakar R.
Author_Institution :
USA CECOM Center for Night Vision & Electro-opt., Fort Belvoir, VA, USA
Abstract :
Recent results which show several ways to improve the photorefractive time response in strontium barium niobate and barium strontium potassium sodium niobate tungsten bronze crystals are presented. The techniques used were thermal, applied fields, self-generated internal fields, and focusing. Orders-of-magnitude improvements in the time response were demonstrated for beam fanning, self-pumped phase conjugation, and double phase conjugation
Keywords :
barium compounds; ferroelectric materials; optical phase conjugation; photorefractive effect; BaNbO3; beam fanning; double phase conjugation; ferroelectric; focusing; photorefractive time response; self-generated internal fields; self-pumped phase conjugation; tungsten bronze crystals; Barium; Crystals; Delay; Ferroelectric materials; Light scattering; Niobium compounds; Optical scattering; Photorefractive materials; Time factors; Tungsten;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200298
