发明名称 |
Production method and device for hologram |
摘要 |
A method and apparatus for producing a hologram using a two-beam laser interference exposure process, comprising the steps of using as a light source a femtosecond laser having a pulse width of 900-10 femtoseconds and a peak output of 1 GW or more and capable of generating a pulse beam at or close to the Fourier transform limit, dividing the pulse beam from the laser into two by a beam splitter, controlling the two beams temporally through an optical delay circuit and spatially using plane and concave mirrors each having a slightly rotatable reflection surface to converge the beams on a surface of or within a substrate for recording a hologram at an energy density of 100 GW/cm2 or more with keeping each polarization plane of the two beams in parallel so as to match the converged spot of the two beams temporally and spatially, whereby a hologram is recorded irreversibly on the substrate formed of a transparent material, semiconductor material or metallic material.
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申请公布号 |
US2002126333(A1) |
申请公布日期 |
2002.09.12 |
申请号 |
US20010890274 |
申请日期 |
2001.11.09 |
申请人 |
HOSONO HIDEO;HIRANO MASAHIRO;SARUKURA NOBUHIKO;KAWAMURA KENICHI |
发明人 |
HOSONO HIDEO;HIRANO MASAHIRO;SARUKURA NOBUHIKO;KAWAMURA KENICHI |
分类号 |
G02B5/18;G02B5/32;G02B6/12;G03H1/04;H01S3/00;H01S5/125;(IPC1-7):G03H1/04 |
主分类号 |
G02B5/18 |
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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