Title:
PHOTO-REFRACTIVE MATERIAL
Document Type and Number:
Japanese Patent JP2001004801
Kind Code:
A
Abstract:
To provide a photo-refractive material capable of obtaining high photosensitivity even without reduction treatment.
A photo-refractive material of single crystal of niobate containing terbium(Tb) or tantalate is a single crystal of lithium niobate(LiNbO3) whose molar ratio of [Li2O]/([Li2O]+[Nb2O5]) is in the range of 0.482 to 0.505 or single crystal of lithium tantalate(LiTaO3) whose molar ratio of [Li2O]/([Li2 O]+[Ta2O3]) is in the range of 0.482 to 0.505. As for this photo-refractive material, an amount of terbium to be added is 10 wt.ppm to 100 wt.ppm.
Inventors:
KITAMURA KENJI
FURUKAWA YASUNORI
TAKEGAWA SHUNJI
RI MEIKEI
HATANO HIDEKI
TANAKA SATORU
YAMAJI TAKASHI
FURUKAWA YASUNORI
TAKEGAWA SHUNJI
RI MEIKEI
HATANO HIDEKI
TANAKA SATORU
YAMAJI TAKASHI
Application Number:
JP17866599A
Publication Date:
January 12, 2001
Filing Date:
June 24, 1999
Export Citation:
Assignee:
PIONEER ELECTRONIC CORP
NAT INST RES INORGANIC MAT
NAT INST RES INORGANIC MAT
International Classes:
G02B5/32; G02B1/02; G03H1/26; G11C13/04; (IPC1-7): G02B1/02; G02B5/32; G03H1/26
Attorney, Agent or Firm:
Fujihiko Motohiko