发明名称 |
Dynamic hologram recording. |
摘要 |
<p>Optical four wave mixing is provided by interfering two waves on a liquid crystal layer (1) temperature stabilised just beneath its nematic isotropic phase change transition temperature. The liquid crystal incorporates a guest dye to absorb the light producing a holographic thermal image which is accompanied by a holographic phase image. Illumination of this phase image with a 'third wave' of different wavelength is then used to produce the required holographically diffracted 'fourth wave'.</p> |
申请公布号 |
EP0152187(A2) |
申请公布日期 |
1985.08.21 |
申请号 |
EP19850300309 |
申请日期 |
1985.01.17 |
申请人 |
STC PLC |
发明人 |
CROSSLAND, WILLIAM ALDEN;ROSS, PETER WILLIAM;COLLINGS, NEIL |
分类号 |
G02F1/13;G02F1/133;G03H1/02;(IPC1-7):G03H1/04 |
主分类号 |
G02F1/13 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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