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Metasurface full-Stokes polarization camera (Conference Presentation)

Arbabi, Ehsan and Kamali, Seyedeh Mahsa and Arbabi, Amir and Faraon, Andrei (2019) Metasurface full-Stokes polarization camera (Conference Presentation). In: High Contrast Metastructures VIII. Proceedings of SPIE. No.10928. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 109280H. ISBN 9781510624986.

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Polarization is an important degree of freedom of light carrying information that is usually missing in other degrees of freedom. Polarimetric imaging is the process of measuring the state of polarization of light over an extended scene. It has several applications ranging from remote sensing to biological and medical imaging because it provides various pieces of information about the light source or the objects with which the light has interacted. So far polarization cameras have been made using polarization filters, and therefore suffer from two major drawbacks. First, there is a theoretical 50% upper limit on the efficiency of devices based on polarization filters. Second, to fully determine the state of polarization, multiple layers should be integrated in order to make polarization filters for circular or elliptical polarization states. Here, we present a polarization camera made using dielectric metasurfaces that operates based on separating and focusing orthogonal polarization states instead of polarization filtering. This allows for overcoming both drawbacks of current polarization camera designs. At the core of the design lies the capability of dielectric metasurfaces to fully control the polarization and phase of light. This enables designing and fabricating superpixels that separate and focus orthogonal polarization states of light on adjacent pixels on an image sensor over a single metasurface layer. Using this technique we have demonstrated full-Stokes polarization cameras with experimental efficiencies surpassing 60%, and superpixel dimensions reaching 4.8 µm×7.2 µm. We have also used this camera to form polarization images of custom-designed polarization targets.

Item Type:Book Section
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URLURL TypeDescription
Arbabi, Ehsan0000-0002-5328-3863
Kamali, Seyedeh Mahsa0000-0002-6968-811X
Arbabi, Amir0000-0001-8831-7552
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:10928
Record Number:CaltechAUTHORS:20190822-134055210
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Official Citation:Ehsan Arbabi, Seyedeh Mahsa Kamali, Amir Arbabi, and Andrei Faraon "Metasurface full-Stokes polarization camera (Conference Presentation)", Proc. SPIE 10928, High Contrast Metastructures VIII, 109280H (8 March 2019);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98127
Deposited By: George Porter
Deposited On:22 Aug 2019 21:00
Last Modified:16 Nov 2021 17:36

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