Ipa Photorefractive jẹ ipilẹ ti awọn ohun elo opiti holographic, ṣugbọn o tun mu awọn wahala wa si awọn ohun elo opiti miiran, nitorinaa imudarasi resistance photorefractive ti lithium niobate crystal ti san akiyesi nla, laarin eyiti ilana doping jẹ ọna pataki julọ.Ni idakeji si doping photorefractive, egboogi-photorefractive doping nlo awọn eroja pẹlu valent ti kii ṣe iyipada lati dinku ile-iṣẹ photorefractive.Ni ọdun 1980, o royin pe resistance photorefractive ti ipin giga Mg-doped LN gara pọ si nipasẹ diẹ sii ju awọn aṣẹ titobi 2, eyiti o fa akiyesi lọpọlọpọ.Ni ọdun 1990, awọn oniwadi rii pe zinc-doped LN ni resistance photorefractive giga ti o jọra si iṣuu magnẹsia-doped LN.Ni ọpọlọpọ ọdun lẹhinna, scandium-doped ati indium-doped LN ni a rii pe o ni resistance photorefractive daradara.

Ni ọdun 2000, Xu et al.se awari wipe gaipin Mg-dopedLNgara pẹlu ga photorefractive resistance ni han iye haso tayọ photorefractive išẹ ni UV band.Yi Awari bu nipasẹ awọn oye tiawọnphotorefractive resistance tiLNkirisita, ati pe o tun kun ofo ti awọn ohun elo photorefractive ti a lo ni ẹgbẹ ultraviolet.Ipari gigun kukuru tumọ si pe iwọn grating holographic le kere ati ti o dara julọ, ati pe o le parẹ ni agbara ati kọ sinu grating nipasẹ ina ultraviolet, ati ka nipasẹ ina pupa ati ina alawọ ewe, lati le mọ ohun elo ti awọn opiti holographic ti o ni agbara. .Lamarque et al.gba awọn gaipin Mg-dopedLN gara ti pese nipasẹ Nankai University bi awọn UV photorefractiveohun eloati isamisi lesa onisẹpo meji ti eto siseto nipa lilo imudara ina pọsi igbi meji.

Ni ipele ibẹrẹ, awọn eroja doping anti-photorefractive pẹlu divalent ati awọn eroja trivalent gẹgẹbi iṣuu magnẹsia, zinc, indium ati scandium.Ni ọdun 2009, Kong et al.ni idagbasoke egboogi-photorefractive doping lilo tetravalent eroja bi hafnium, zirconium ati tinah.Nigbati o ba ni iyọrisi resistance photorefractive kanna, ni akawe pẹlu divalent ati awọn eroja doped trivalent, iye doping ti awọn eroja tetradvalent dinku, fun apẹẹrẹ, 4.0 mol% hafnium ati 6.0 mol% magnẹsia dopedLNkirisita ni similarresistance photorefractive,2.0 mol% zirconium ati 6.5 mol% iṣuu magnẹsia dopedLNkirisita ni similarphotorefractive resistance.Pẹlupẹlu, olusọdipúpọ ipinya ti hafnium, zirconium ati tin ni lithium niobate jẹ isunmọ si 1, eyiti o jẹ ọjo diẹ sii fun igbaradi ti awọn kirisita to gaju.

LN didara ti o ni idagbasoke nipasẹ WISOPTIC [www.wisoptic.com]