Ground and Space-Based Telescopes

Structural influences on intensity interferometry

[+] Author Affiliations
Arup Maji

University of New Mexico, MSC01 1070, Albuquerque, New Mexico 87131, United States

Mark Harris

New Mexico Tech, 801 Leroy Place, Socorro, New Mexico 87110, United States

J. Astron. Telesc. Instrum. Syst. 2(1), 014003 (Feb 17, 2016). doi:10.1117/1.JATIS.2.1.014003
History: Received September 4, 2015; Accepted January 12, 2016
Text Size: A A A

Abstract.  Intensity interferometry (II) is an alternate form of creating images of distant objects. It is significantly less sensitive to atmospheric distortions and aberrations of telescope surfaces than conventional amplitude-based imaging. The deficiencies of II can be overcome as photodetectors’ read-out rates are becoming faster and computers more powerful. In recognition of the possibility of very large space-based imaging systems, this paper investigates how the deformation of a large, thin optical surface would influence the accuracy of II. Based on the theoretical foundation of II, an optical ray-tracing algorithm was used to examine how the statistics of a photon stream changes from the source to the detector. Ray-tracing and finite element analyses of the structure were thereafter integrated to quantify how the correlation of the intensity field changes as the reflective structure deforms. Varying the positions of the detector from the focal plane and the surface profile of the mirror provided an understanding and quantification of how the various scenarios affect the statistics of the detected light and the correlation measurement. This research and analysis provide the means to quantify how structural perturbations of focal mirrors affect the statistics of photon stream detections inherent in II instrumentation.

Figures in this Article
© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Arup Maji and Mark Harris
"Structural influences on intensity interferometry", J. Astron. Telesc. Instrum. Syst. 2(1), 014003 (Feb 17, 2016). ; http://dx.doi.org/10.1117/1.JATIS.2.1.014003


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.