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Proceedings Paper

Compact spatial heterodyne interferometer using polarization gratings
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Paper Abstract

Spatial heterodyne interferometry (SHI) is a spectral measurement technique based on Fourier Transform Spectroscopy (FTS). One main benefit of an FTS lies in its higher spectral resolving power over direct measurement (dispersive) systems; however, accessing this higher resolving power can result in longer measurement times without heterodyning techniques. In this paper, the calibration and modeling of a polarization SHI is detailed, based on the Jones matrix formalism. With this, we explore non-ideal aspects of the polarization grating, such as zero-order light leakage. This light leakage causes crosstalk that can introduce errors in the spectral calibration. To minimize error, a calibration procedure is introduced based on a linear operator theory. Finally, the Jones matrix model and calibration procedure are validated through a series of experiments.

Paper Details

Date Published: 27 September 2013
PDF: 9 pages
Proc. SPIE 8873, Polarization Science and Remote Sensing VI, 88730Q (27 September 2013); doi: 10.1117/12.2024104
Show Author Affiliations
Michael W. Kudenov, North Carolina State Univ. (United States)
Matthew N. Miskiewicz, North Carolina State Univ. (United States)
Michael J. Escuti, North Carolina State Univ. (United States)
Jim Coward, SA Photonics (United States)

Published in SPIE Proceedings Vol. 8873:
Polarization Science and Remote Sensing VI
Joseph A. Shaw; Daniel A. LeMaster, Editor(s)

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