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AssigneeSandia Corporation
InventorsMichael A. Butler, Antonio J. Ricco, Michael B. Sinclair, Stephen D. Senturia
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Optical apparatus for forming correlation spectrometers and optical processors. The optical apparatus comprises one or more diffractive optical elements formed on a substrate for receiving light from a source and processing the incident light. The optical apparatus includes an addressing element for alternately addressing each diffractive optical element thereof to produce for one unit of time a first correlation with the incident light, and to produce for a different unit of time a second correlation with the incident light that is different from the first correlation. In preferred embodiments of the invention, the optical apparatus is in the form of a correlation spectrometer; and in other embodiments, the apparatus is in the form of an optical processor. In some embodiments, the optical apparatus comprises a plurality of diffractive optical elements on a common substrate for forming first and second gratings that alternately intercept the incident light for different units of time. In other embodiments, the optical apparatus includes an electrically-programmable diffraction grating that may be alternately switched between a plurality of grating states thereof for processing the incident light. The optical apparatus may be formed, at least in part, by a micromachining process.
Optical apparatus for processing incident light from a source, comprising:
Optical apparatus for processing incident light from a source comprising:
Optical apparatus for processing incident light from a source, comprising:
A correlation spectrometer for analyzing at least one material of interest comprising:
A correlation spectrometer for analyzing at least one material of interest by means of light from a source having impressed thereon a spectral signature due to interaction of the light with each material of interest, the correlation spectrometer comprising at least one diffractive optical element formed on a substrate and comprising within each diffractive optical element a plurality of independently addressable grating elements with adjacent adjacent grating elements being independently moveable relative to each other and configurable in at least two grating states including a first grating state selectable for an unit of time for receiving and processing the light to produce a first spectrum including at least a portion of the spectral signature of each material of interest, and a second grating state selectable for a different unit of time for receiving and processing the light to produce a second spectrum shifted in wavelength from the first spectrum.
A correlation spectrometer for analyzing at least one material of interest by means of light from a source having impressed thereon a spectral signature due to interaction of the light with each material of interest, the correlation spectrometer comprising:
A correlation spectrometer for analyzing at least one material of interest by means of light from a source having impressed thereon a spectral signature due to interaction of the light with each material of interest, the correlation spectrometer comprising:
Dependencies are inferred from the claim text.