PMID- 32400442
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200513
IS  - 1539-4522 (Electronic)
IS  - 1559-128X (Linking)
VI  - 59
IP  - 11
DP  - 2020 Apr 10
TI  - Geometrical and physical optics analysis for mm-wavelength refractor telescopes 
      designed to map the cosmic microwave background.
PG  - 3324-3339
LID - 10.1364/AO.387842 [doi]
AB  - We present a compact two-lens high-density polyethylene (HDPE) $ f/1.6 $f/1.6 
      refractor design that is capable of supporting a 28-deg diffraction-limited field 
      of view at 1-mm wavelengths and contrast it to a similar two-lens refractor using 
      silicon lenses. We compare the optical properties of these two systems as 
      predicted by both geometrical and physical optics. The presented analysis 
      suggests that by relaxing telecentricity requirements, a plastic two-lens 
      refractor system can be made to have a surprisingly large field of view. 
      Furthermore, this HDPE system is found to perform comparably to a similar silicon 
      system across a wide field of view and wavelengths up to 1 mm. We show that for 
      both telescope designs, cold stop spillover changes significantly across the 
      field of view in a way that is somewhat inconsistent with Gaussian beam formalism 
      and simple $ f $f-number scaling. We present results that highlight beam 
      ellipticity dependence on both pixel location and pixel aperture size-an effect 
      that is challenging to reproduce in standard geometrical optics. We show that a 
      silicon refractor design suffers from larger cross-polarization compared to the 
      HDPE design. Our results address the limitations of relying solely on geometrical 
      optics to assess relative performance of two optical systems. We discuss 
      implications for future refractor designs.
FAU - Gudmundsson, Jon E
AU  - Gudmundsson JE
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Appl Opt
JT  - Applied optics
JID - 0247660
SB  - IM
EDAT- 2020/05/14 06:00
MHDA- 2020/05/14 06:01
CRDT- 2020/05/14 06:00
PHST- 2020/05/14 06:00 [entrez]
PHST- 2020/05/14 06:00 [pubmed]
PHST- 2020/05/14 06:01 [medline]
AID - 429668 [pii]
AID - 10.1364/AO.387842 [doi]
PST - ppublish
SO  - Appl Opt. 2020 Apr 10;59(11):3324-3339. doi: 10.1364/AO.387842.