发明名称 |
ULTRA-THIN OPTICAL COATINGS AND DEVICES AND METHODS OF USING ULTRA-THIN OPTICAL COATINGS |
摘要 |
A spectral encoder includes a thin layer of lossy dielectric material whose thickness varies transversely from 0 to a thickness of about lambda/4n (e.g., < 100 nm), where lambda is the wavelength of incident radiation and n is the dielectric material's refractive index. The dielectric layer reflects (and/or transmits) light at a wavelength that depends on the layer's thickness. Because the dielectric layer's thickness varies, different parts of the dielectric layer may reflect (transmit) light at different wavelengths. For instance, shining white light on a dielectric layer with a linearly varying thickness may produce a rainbow-like reflected (and/or transmitted) beam. Thus, the spectral encoder maps different wavelengths to different points in space. This mapping can be characterized by a transfer matrix which can be used to determine the spectrum of radiation incident on the spectral encoder from the spatial intensity distribution of the radiation reflected (and/or transmitted) by the spectral encoder. |
申请公布号 |
WO2013184556(A1) |
申请公布日期 |
2013.12.12 |
申请号 |
WO2013US43851 |
申请日期 |
2013.06.03 |
申请人 |
PRESIDENT AND FELLOWS OF HARVARD COLLEGE |
发明人 |
KATS, MIKHAIL, A.;BLANCHARD, ROMAIN;GENEVET, PATRICE;CAPASSO, FEDERICO |
分类号 |
G01J3/00;G01J3/26;H01L27/14 |
主分类号 |
G01J3/00 |
代理机构 |
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