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

Aharon Agranat; Rudy Hofmeister; Amnon Yariv

doi:10.1364/OL.17.000713

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

Aharon Agranat
, Rudy Hofmeister
, Amnon Yariv

The Institute of Applied Physics

Research output: Contribution to journal › Article › peer-review

117 Scopus citations

Abstract

We report the growth and characterization of a new photorefractive material, potassium lithium tantalate niobate (KLTN). A KLTN crystal doped with copper is demonstrated to yield high diffraction efficiency of photorefractive gratings in the paraelectric phase. Voltage-controllable index gratings with n₁, = 8.5 × 10⁻⁵ were achieved, which yielded diffraction efficiencies of 75% in a 2.9-mm-thick sample. In addition, diffraction was observed in the paraelectric phase without an applied field. This effect is attributed to a growth-induced strain field.

Original language	English
Pages (from-to)	713-715
Number of pages	3
Journal	Optics Letters
Volume	17
Issue number	10
DOIs	https://doi.org/10.1364/OL.17.000713
State	Published - 15 May 1992

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title = "Characterization of a new photorefractive material: K1−yLyT1−xNx",

abstract = "We report the growth and characterization of a new photorefractive material, potassium lithium tantalate niobate (KLTN). A KLTN crystal doped with copper is demonstrated to yield high diffraction efficiency of photorefractive gratings in the paraelectric phase. Voltage-controllable index gratings with n1, = 8.5 × 10−5 were achieved, which yielded diffraction efficiencies of 75\% in a 2.9-mm-thick sample. In addition, diffraction was observed in the paraelectric phase without an applied field. This effect is attributed to a growth-induced strain field.",

author = "Aharon Agranat and Rudy Hofmeister and Amnon Yariv",

year = "1992",

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AU - Hofmeister, Rudy

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Y1 - 1992/5/15

N2 - We report the growth and characterization of a new photorefractive material, potassium lithium tantalate niobate (KLTN). A KLTN crystal doped with copper is demonstrated to yield high diffraction efficiency of photorefractive gratings in the paraelectric phase. Voltage-controllable index gratings with n1, = 8.5 × 10−5 were achieved, which yielded diffraction efficiencies of 75% in a 2.9-mm-thick sample. In addition, diffraction was observed in the paraelectric phase without an applied field. This effect is attributed to a growth-induced strain field.

AB - We report the growth and characterization of a new photorefractive material, potassium lithium tantalate niobate (KLTN). A KLTN crystal doped with copper is demonstrated to yield high diffraction efficiency of photorefractive gratings in the paraelectric phase. Voltage-controllable index gratings with n1, = 8.5 × 10−5 were achieved, which yielded diffraction efficiencies of 75% in a 2.9-mm-thick sample. In addition, diffraction was observed in the paraelectric phase without an applied field. This effect is attributed to a growth-induced strain field.

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

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