Low cross-polarization FIR MKID camera

Stephen J. C. Yates; Alejandro Pascual Laguna; José R. G. Silva; Edgar Castillo-Dominguez; Martin Eggens; Lorenza Ferrari; Willem Jellema; Dimitry Lamers; Bram N. R. Lap; David J. Thoen; Ian Veenendaal; Jochem J. A. Baselmans

doi:10.1117/12.3019813

17 August 2024 Low cross-polarization FIR MKID camera

Stephen J. C. Yates, Alejandro Pascual Laguna, José R. G. Silva, Edgar Castillo-Dominguez, Martin Eggens, Lorenza Ferrari, Willem Jellema, Dimitry Lamers, Bram N. R. Lap, David J. Thoen, Ian Veenendaal, Jochem J. A. Baselmans

Author Affiliations +

Proceedings Volume PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; PC131020R (2024) https://doi.org/10.1117/12.3019813
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

We present measurements of a polarization sensitive lens-antenna coupled MKID array at 1.5THz, mounted with an additional 20dB neutral density filter in a wide field camera. This allows full end to end system characterization with room temperature optical sources, but under similar optical loading conditions as expected in a space based polarimeter configuration.

The system is characterized using a wideband polarized photomixer based phase and amplitude beam pattern setup at 1.5THz. Two separate measurements with orthogonal source polarizations enable the co and cross polarization to be extracted, showing the full system low cross-polarization needed for many future polarimetric applications. Such a measurement setup is additionally of potential interest for the characterization of future missions (for example in the Far Infra-Red): to obtain the optical beam quality and verifying the optical interfaces on a component/sub-component level. We present and discuss this setup and the characterization of the lens-antenna coupled MKID camera.

Conference Presentation

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Stephen J. C. Yates, Alejandro Pascual Laguna, José R. G. Silva, Edgar Castillo-Dominguez, Martin Eggens, Lorenza Ferrari, Willem Jellema, Dimitry Lamers, Bram N. R. Lap, David J. Thoen, Ian Veenendaal, and Jochem J. A. Baselmans "Low cross-polarization FIR MKID camera", Proc. SPIE PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, PC131020R (17 August 2024); https://doi.org/10.1117/12.3019813

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