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Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD
- Source :
- Journal of Low Temperature Physics, vol 193, iss 5-6
- Publication Year :
- 2018
- Publisher :
- eScholarship, University of California, 2018.
-
Abstract
- The high-frequency telescope for LiteBIRD is designed with refractive and reflective optics. In order to improve sensitivity, this paper suggests the new optical configurations of the HFT which have approximately 7 times larger focal planes than that of the original design. The sensitivities of both the designs are compared, and the requirement of anti-reflection (AR) coating on the lens for the refractive option is derived. We also present the simulation result of a sub-wavelength AR structure on both surfaces of silicon, which shows a band-averaged reflection of 1.1–3.2% at 101–448 GHz.
Details
- Database :
- OpenAIRE
- Journal :
- Journal of Low Temperature Physics, vol 193, iss 5-6
- Accession number :
- edsair.dedup.wf.001..7f36521c79d6957ed3d608e0887109fc