Title:
OPTICAL FUNCTIONAL ELEMENT, SINGLE CRYSTAL SUBSRATE FOR THE ELEMENT, AND METHOD FOR USING THE ELEMENT
Document Type and Number:
Japanese Patent JP2002072267
Kind Code:
A
Abstract:
To highly precisely and uniformly form a polarization inversion struc ture without any optical distortion.
The optical functional element is obtained by forming the polarization inversion structure at the temperature lower than the Curie temperature by using an electron beam scanning irradiation method or voltage application method in a part of a ferroelectric single crystal substrate preparedly using LiNbO3 crystal having 0.95 to 1.01 molar ratio of Li/Nb as the substrate, and the optical functional element controls the light passing through the polarization inversion part. By this method, ≤2% propagation loss and ≤1×10-4 optical distortion can be obtained without any heat treatment.
Inventors:
FURUKAWA YASUNORI
KITAMURA KENJI
TAKEGAWA SHUNJI
NAKAMURA MASARU
KITAMURA KENJI
TAKEGAWA SHUNJI
NAKAMURA MASARU
Application Number:
JP2000255253A
Publication Date:
March 12, 2002
Filing Date:
August 25, 2000
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE
FURUKAWA YASUNORI
KITAMURA KENJI
TAKEGAWA SHUNJI
NAKAMURA MASARU
FURUKAWA YASUNORI
KITAMURA KENJI
TAKEGAWA SHUNJI
NAKAMURA MASARU
International Classes:
G02F1/37; C30B29/30; G02F1/00; G02F1/29; G02F1/355; G02F1/35; G02F1/377; G02F1/39; (IPC1-7): G02F1/37; C30B29/30; G02F1/29