SPATIAL HETERODYNE INTEGRATED COMPUTATIONAL ELEMENT (SH-ICE) SPECTROMETER

摘要

A spatial heterodyne spectrometer may employ an integrated computational element (ICE) to obtain a measure of one or more fluid properties without requiring any moving parts, making it particularly suitable for use in a downhole environment. One illustrative method embodiment includes: directing light from a light source to illuminate a sample; transforming light from the sample into spatial fringe patterns using a dispersive two-beam interferometer; adjusting a spectral weighting of the spatial fringe patterns using an integrated computation element (ICE); focusing spectral-weight-adjusted spatial fringe patterns into combined fringe intensities; detecting the combined fringe intensities; and deriving at least one property of the sample.

主权项

1. A spectral analysis tool that comprises:
a light source that illuminates a sample; a detector; an optical path that couples light that has interacted with the sample to the detector; a dispersive two-beam interferometer that transforms light propagating along the path into spatial fringe patterns associated with corresponding wavelengths; and an integrated computational element (ICE) that adjusts a spectral weighting of light propagating along the optical path.