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Mueller matrix maps of dichroic filters reveal polarization aberrations

Heath, James and Kupinski, Meredith and Douglas, Ewan and Hart, Kira and Breckinridge, James (2020) Mueller matrix maps of dichroic filters reveal polarization aberrations. In: Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave. Proceedings of SPIE. No.11443. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1144341. ISBN 9781510636736. https://resolver.caltech.edu/CaltechAUTHORS:20210114-125019435

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Abstract

Dichroic filters are used by instrument designers to split a field of view into different optical paths for simultaneous measurement of different spectral bands. Quantifying the polarization aberrations of a dichroic is relevant for predicting the incident polarization states downstream, which could affect the performance of diffraction limited systems. One important application is the fore-optics of exoplanet imaging coronagraphs. In this work, the polarization properties of the Edmund #69-205 650 nm roll-off dichroic are measured using a rotating retarder Mueller matrix imaging polarimeter. The polarization properties of this commercial dichroic are compared at normal and 45° angle of incidence. The normal incidence measurements verify the instrument calibration since no polarization aberrations were observed. Transmission measurements at 680 nm and 45° yield a 2.9 rad magnitude of retardance and 0.95 diattenuation. Effectively, at 630 nm the dichroic is a λ/4 waveplate with a horizontal fast-axis.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2576282DOIArticle
ORCID:
AuthorORCID
Breckinridge, James0000-0002-9488-098X
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:11443
Record Number:CaltechAUTHORS:20210114-125019435
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210114-125019435
Official Citation:James Heath, Meredith Kupinski, Ewan Douglas, Kira Hart, and James Breckinridge "Mueller matrix maps of dichroic filters reveal polarization aberrations", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 1144341 (22 December 2020); https://doi.org/10.1117/12.2576282
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107475
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Jan 2021 21:03
Last Modified:14 Jan 2021 21:03

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