CCAT-prime: the design and characterization of the silicon mirrors for the Fabry-Perot interferometer in the Epoch of reionization spectrometer

Bugao Zou; Steve K. Choi; Nicholas F. Cothard; Rodrigo Freundt; Zachary B. Huber; Yaqiong Li; Michael D. Niemack; Thomas Nikola; Dominik A Riechers; Kayla M. Rossi; Gordon J. Stacey; Eve M. Vavagiakis

doi:10.1117/12.2629518

31 August 2022 CCAT-prime: the design and characterization of the silicon mirrors for the Fabry-Perot interferometer in the Epoch of reionization spectrometer

Bugao Zou, Steve K. Choi, Nicholas F. Cothard, Rodrigo Freundt, Zachary B. Huber, Yaqiong Li, Michael D. Niemack, Thomas Nikola, Dominik A Riechers, Kayla M. Rossi, Gordon J. Stacey, Eve M. Vavagiakis

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 121902B (2022) https://doi.org/10.1117/12.2629518
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Epoch of Reionization Spectrometer (EoR-Spec) is one of the instrument modules to be installed in the Prime-Cam receiver of the Fred Young Submillimeter Telescope (FYST). This six-meter aperture telescope will be built on Cerro Chajnantor in the Atacama Desert in Chile. EoR-Spec is designed to probe early star-forming regions by measuring the [CII] fine-structure lines between redshift z = 3.5 and z = 8 using the line intensity mapping technique. The module is equipped with a scanning Fabry-Perot interferometer (FPI) to achieve the spectral resolving power of about RP = 100. The FPI consists of two parallel and identical, highly reflective mirrors with a clear aperture of 14 cm, forming a resonating cavity called etalon. The mirrors are silicon based and patterned with double-layer metamaterial anti-reflection coatings (ARC) on one side and metal mesh reflectors on the other. The double-layer ARCs ensure a low reflectance at one substrate surface and help tailor the reflectance profile over the FPI bandwidth. Here we present the design, fabrication processes, test setup, and characterization of silicon mirrors for the FPI.

Citation Download Citation

Bugao Zou, Steve K. Choi, Nicholas F. Cothard, Rodrigo Freundt, Zachary B. Huber, Yaqiong Li, Michael D. Niemack, Thomas Nikola, Dominik A Riechers, Kayla M. Rossi, Gordon J. Stacey, and Eve M. Vavagiakis "CCAT-prime: the design and characterization of the silicon mirrors for the Fabry-Perot interferometer in the Epoch of reionization spectrometer", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121902B (31 August 2022); https://doi.org/10.1117/12.2629518

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available