Recent Posts

Snapshot hyperspectral imaging Fourier transform spectropolarimeter

Abstract: The design and experimental results of a snapshot spatially heterodyned imaging Fourier transform (SHIFT) spectropolarimeter are presented. The sensor utilizes common-path interferometry, which lends improved...

Fraunhofer line optical correlator for orbit determination

Abstract: The design of a Fraunhofer line optical correlator is detailed. The instrument described herein correlates a reflected solar spectrum against multiple Fraunhofer absorption lines to estimate...

Passive Standoff Imaging using Spatial-Spectral Multiplexing

The concept of a passive far-field imaging system, using a unique spatial-spectral multiplexing (SSM) technique, is presented. The described SSM technique uses spectrally resolved interferometry to...

Snapshot retinal imaging Mueller matrix polarimeter

Abstract: Early diagnosis of glaucoma, which is a leading cause for visual impairment, is critical for successful treatment. It has been shown that Imaging polarimetry...

Ultraspectral Imaging and the Snapshot Advantage

Ultraspectral sensing has been investigated as a way to resolve terrestrial chemical fluorescence within solar Fraunhofer lines. Referred to as Fraunhofer Line Discriminators (FLDs), these sensors...

Phase error in FTSs employing polarization interferometers

Phase error is common in reflective interferometers, such as the Michelson. This yields highly asymmetric interferograms that complicate the post-processing of single-sided interference data. Common...

Snapshot Imaging Fraunhofer Line Discriminator

Abstract- Reflectance measurements have been a long standing means of quantifying chlorophyll, and other chemical contents, within vegetation. Conventional metrics that are common include normalized...