Abstract

Experimental results that demonstrate the formation of photorefractive gratings in KTN:Cu,V in the paraelectric phase are presented. These gratings are formed using the quadratic electro-optic effect, which allows amplitude modulation of the diffracted beam by an external electric field. High diffraction efficiencies of over 50% in a 3-mm-thick sample and amplitude modulation of the diffracted beam by an external field at frequencies of up to 20 kHz were observed.

© 1989 Optical Society of America

Determination of the physical parameters controlling the photorefractive effect in KTa₁₋xNbxO₃:Cu,V

Victor Leyva, Aharon Agranat, and Amnon Yariv
J. Opt. Soc. Am. B 8(3) 701-707 (1991)

Fixing of a photorefractive grating in KTa₁₋xNbxO₃ by cooling through the ferroelectric phase transition

Victor Leyva, Aharon Agranat, and Amnon Yariv
Opt. Lett. 16(8) 554-556 (1991)

Investigation of the holographic storage capacity of paraelectric K_1?xLixTa_1?yNbyO₃:Cu,V

Benny Pesach, Eli Refaeli, and Aharon J. Agranat
Opt. Lett. 23(8) 642-644 (1998)

Increased photorefractive sensitivity in double-doped KTa₁₋xNbxO₃:Fe,Ti

Victor Leyva, Aharon Agranat, and Amnon Yariv
Opt. Lett. 18(12) 959-961 (1993)

Characterization of a new photorefractive material: K₁₋yLyT₁₋xNx

Aharon Agranat, Rudy Hofmeister, and Amnon Yariv
Opt. Lett. 17(10) 713-715 (1992)