@article{woodard_kudenov_2017, title={Snapshot spectrally resolved longitudinal spatial coherence interferometry}, volume={56}, ISSN={["1560-2303"]}, DOI={10.1117/1.oe.56.6.064104}, abstractNote={Abstract. We present a one-dimensional (1-D) imaging technique that uses longitudinal spatial coherence interferometry to encode a scene’s spatial information onto the source’s power spectrum. By spectrally resolving the output using a spectrometer, a channeled spectrum is measured. Fourier transformation of the channeled spectrum yields a measurement of the incident scene’s angular spectrum. The theory is presented to exhibit analogies to conventional Fourier transform spectroscopy of the power spectrum. Experimental validation of the technique is demonstrated, using a Fabry–Perot etalon, for the reconstruction of 1-D sinusoidal and randomly generated angular spectra. Root mean square error between the input and output angular spectra is demonstrated, on average, to be 12.7% and 13.6% for single-frequency and random spectra, respectively.}, number={6}, journal={OPTICAL ENGINEERING}, author={Woodard, Ethan R. and Kudenov, Michael W.}, year={2017}, month={Jun} }
@article{woodard_kudenov_2017, title={Spectrally Resolved Longitudinal Spatial Coherence Interferometry}, volume={10198}, ISBN={["978-1-5106-0898-6"]}, ISSN={["0277-786X"]}, DOI={10.1117/12.2264324}, abstractNote={We present an alternative imaging technique using spectrally resolved longitudinal spatial coherence interferometry to encode a scene’s angular information onto the source’s power spectrum. Fourier transformation of the spectrally resolved channeled spectrum output yields a measurement of the incident scene’s angular spectrum. Theory for the spectrally resolved interferometric technique is detailed, demonstrating analogies to conventional Fourier transform spectroscopy. An experimental proof of concept system and results are presented using an angularly-dependent Fabry-Perot interferometer-based optical design for successful reconstruction of one-dimensional sinusoidal angular spectra. Discussion for a potential future application of the technique, in which polarization information is encoded onto the source’s power spectrum is also given.}, journal={ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXIII}, author={Woodard, Ethan R. and Kudenov, Michael W.}, year={2017} }
@article{woodard_kudenov_2015, title={Passive Standoff Imaging using Spatial-Spectral Multiplexing}, volume={9472}, ISSN={["1996-756X"]}, DOI={10.1117/12.2177272}, abstractNote={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 multiplex a scene’s angular spectrum onto the power spectrum, while dispersion characteristics are implemented to heterodyne the channeled spectrum into the spectral range of visible light. In this paper, the theory of the design is detailed and an analysis of the spatial and spectral tradespace of the system are discussed. Applications for this imaging technique are primarily focused in remote sensing and far-field target identification.}, journal={ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXI}, author={Woodard, Ethan R. and Kudenov, Michael W.}, year={2015} }