Direct correlation spectrometer using polarized light

Michael W. Kudenov; Brett Pantalone

doi:10.1117/12.2530056

6 September 2019 Direct correlation spectrometer using polarized light

Michael W. Kudenov, Brett Pantalone

Proceedings Volume 11132, Polarization Science and Remote Sensing IX; 111320V (2019) https://doi.org/10.1117/12.2530056
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

Measuring a target’s radial velocity is usually achieved using high-resolution spectroscopy; however, higher signal to noise ratios can be obtained using direct correlation spectrometers (DCSs). In our system, a liquid crystal spatial light modulator serves as the mask against which the incident spectrum is correlated, and the polarization is controlled to enable both in- and out-of-band light to be captured simultaneously. This offers enhanced performance against atmospheric scintillation and may also enable single-shot radial velocity measurements. In this paper, we describe the design and implementation of our polarization-DCS and experimental validation is performed by acquiring radial velocity measurements of Venus.

Citation Download Citation

Michael W. Kudenov and Brett Pantalone "Direct correlation spectrometer using polarized light", Proc. SPIE 11132, Polarization Science and Remote Sensing IX, 111320V (6 September 2019); https://doi.org/10.1117/12.2530056

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