公开(公告)号：US3799642A

公开(公告)日：1974-03-26

申请号：US34532373

申请日：1973-03-27

Applicant: RCA CORP

Inventor： PHILLIPS W ,  STAEBLER D

IPC: G03C1/725 ,  G03H1/02 ,  G02B27/00

CPC classification number: G03H1/02 ,  G03C1/725 ,  G03H2001/0268 ,  G03H2260/52 ,  G03H2260/54 ,  Y10S359/90 ,  Y10S430/146

Abstract: Photochromic lithium niobate crystals containing iron and either manganese or copper are useful for recording phase holograms in the photosensitive state of the crystals, which holograms can be permanently fixed and read out without loss in the quality of the image obtained therefrom over extended periods.

Abstract translation: 含有铁和锰或铜的光致变色铌酸锂晶体可用于在晶体的感光状态下记录相位全息图，该全息图可以永久地固定和读出，并且在长时间内从其获得的图像的质量不损失。

公开(公告)号：US3773400A

公开(公告)日：1973-11-20

申请号：US3773400D

申请日：1972-10-10

Applicant: RCA CORP

Inventor： AMODEI J ,  STAEBLER D

IPC: G03H1/02 ,  G02F1/03 ,  G02F1/05 ,  G11C13/04 ,  G02B27/00

CPC classification number: G02F1/0541 ,  G11C13/044 ,  Y10S359/90

Abstract: Phase holograms recorded in single crystal electro-optic materials such as undoped or doped lithium niobate and barium sodium niobate doped with iron and molybdenum are fixed so that the holographic pattern is not erased upon readout of the holographic information contained in the crystal. One method for fixing the pattern consists of heating the crystal at an elevated temperature either while or subsequent to writing the holographic pattern in the crystal. An alternate method for fixing the pattern consists of exposing the crystal to ionizing radiation during recording of the holographic information in the crystal.

Abstract translation: 记录在单晶电光材料中的相位全息图，例如未掺杂或掺杂的铌酸锂和掺杂有铁和钼的铌酸钡钠是固定的，使得全息图案在读出包含在晶体中的全息信息时不被擦除。 用于固定图案的一种方法是在将全息图案写入晶体的同时或之后在升高的温度下加热晶体。 用于固定图案的替代方法包括在晶体中记录全息信息期间将晶体暴露于电离辐射。