Thermopile detector of light ellipticity

Feng Lu, Jongwon Lee, Aiting Jiang, Seungyong Jung and Mikhail A. Belkin ()
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Feng Lu: Microelectronics Research Center, The University of Texas at Austin
Jongwon Lee: Microelectronics Research Center, The University of Texas at Austin
Aiting Jiang: Microelectronics Research Center, The University of Texas at Austin
Seungyong Jung: Microelectronics Research Center, The University of Texas at Austin
Mikhail A. Belkin: Microelectronics Research Center, The University of Texas at Austin

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract Polarimetric imaging is widely used in applications from material analysis to biomedical diagnostics, vision and astronomy. The degree of circular polarization, or light ellipticity, is associated with the S3 Stokes parameter which is defined as the difference in the intensities of the left- and right-circularly polarized components of light. Traditional way of determining this parameter relies on using several external optical elements, such as polarizers and wave plates, along with conventional photodetectors, and performing at least two measurements to distinguish left- and right-circularly polarized light components. Here we theoretically propose and experimentally demonstrate a thermopile photodetector element that provides bipolar voltage output directly proportional to the S3 Stokes parameter of the incident light.

Date: 2016
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DOI: 10.1038/ncomms12994

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