Birefringent snapshot imaging spatial heterodyne spectrometer

Bryan D. Maione; David A. Luo; Michael W. Kudenov; Michael J. Escuti; Matthew N. Miskiewicz

doi:10.1117/12.2049726

21 May 2014 Birefringent snapshot imaging spatial heterodyne spectrometer

Bryan D. Maione, David A. Luo, Michael W. Kudenov, Michael J. Escuti, Matthew N. Miskiewicz

Proceedings Volume 9099, Polarization: Measurement, Analysis, and Remote Sensing XI; 90990M (2014) https://doi.org/10.1117/12.2049726
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

High speed spectral imaging is useful for a variety of tasks spanning industrial monitoring, target detection, and chemical identification. To better meet these needs, compact hyperspectral imaging instrumentation, capable of high spectral resolution and real-time data acquisition and processing, are required. In this paper, we describe the first snapshot imaging spatial heterodyne Fourier transform spectrometer based on birefringent crystals and polarization gratings. This includes details about its architecture, as well as our preliminary proof of concept. Finally, we discuss details related to the calibration of the sensor, including our preliminary investigations into high speed data reconstruction and calibration using neural networks. With such an approach, it may be feasible to reconstruct and calibrate an entire interferogram cube in one step with minimal Fast Fourier Transform (FFT) processing.

Citation Download Citation

Bryan D. Maione, David A. Luo, Michael W. Kudenov, Michael J. Escuti, and Matthew N. Miskiewicz "Birefringent snapshot imaging spatial heterodyne spectrometer", Proc. SPIE 9099, Polarization: Measurement, Analysis, and Remote Sensing XI, 90990M (21 May 2014); https://doi.org/10.1117/12.2049726

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