发明名称 |
Method and assembly for confocal, chromatic, interferometric and spectroscopic scanning of optical, multi-layer data memories |
摘要 |
An interferometric confocal method and assembly for terabyte volume optical data memories couples two-beam spectral interferometry to chromatic confocal technology and permits a longitudinal splitting of foci in the memory volume, with the foci having limited diffraction. A spectrometer is located downstream of the interferometer with confocal discrimination in the beam path. A diffractive optical zone lens (DOZE) with a usage of the first diffraction order is introduced into the interferometric beam path to achieve longitudinal chromatic splitting. The interferometer can be a fiber-coupled interferometer with a retroreflector in the fiber-coupled reference arm and with wavelength-dependent optical path difference modification by dispersion or diffraction. The optical path difference in the interferometer is set so that easily detectable wavelets are formed from detectable interferograms by spectral analysis.
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申请公布号 |
US7876446(B2) |
申请公布日期 |
2011.01.25 |
申请号 |
US20060883413 |
申请日期 |
2006.02.03 |
申请人 |
UNIVERSITAT STUTTGART |
发明人 |
KOERNER KLAUS;BERGER REINHARD;DROSTE ULRICH;KOHLER CHRISTIAN;OSTEN WOLFGANG;PRUSS CHRISTOF;RUPRECHT AIKO;WIESENDANGER TOBIAS |
分类号 |
G01B9/02;G01J3/45;G11B7/125;G11B7/13;G11B7/135;G11B7/14;G11B7/24;G11B7/24038 |
主分类号 |
G01B9/02 |
代理机构 |
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代理人 |
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主权项 |
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