Compact spatial heterodyne interferometer using polarization gratings

Michael W. Kudenov; Matthew N. Miskiewicz; Michael J. Escuti; Jim Coward

doi:10.1117/12.2024104

27 September 2013 Compact spatial heterodyne interferometer using polarization gratings

Michael W. Kudenov, Matthew N. Miskiewicz, Michael J. Escuti, Jim Coward

Proceedings Volume 8873, Polarization Science and Remote Sensing VI; 88730Q (2013) https://doi.org/10.1117/12.2024104
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

Michael W. Kudenov, Matthew N. Miskiewicz, Michael J. Escuti, and Jim Coward "Compact spatial heterodyne interferometer using polarization gratings", Proc. SPIE 8873, Polarization Science and Remote Sensing VI, 88730Q (27 September 2013); https://doi.org/10.1117/12.2024104

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