A new paradigm in the field of stray light control and characterization enabled by ultrafast time-of-flight imaging

L. Clermont; W. Uhring; M. Georges; W. Khaddour; P. Blain; E. Mazy

doi:10.1117/12.2629300

29 August 2022 A new paradigm in the field of stray light control and characterization enabled by ultrafast time-of-flight imaging

L. Clermont, W. Uhring, M. Georges, W. Khaddour, P. Blain, E. Mazy

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121881F (2022) https://doi.org/10.1117/12.2629300
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Space telescopes require always better stray light control. However conventional characterization methods rely on the same principles since several decades and we are reaching the limits of their capabilities. We have developed a disruptive approach which solves these limitations: stray light characterization by ultrafast time of flight imaging. By using a pulsed laser source and an ultrafast sensor, we are able to discriminate and identify individual stray light contributors, thus providing the ultimate understanding of the stray light origins in an instrument. In this paper, we present our approach and its potential for the future of space telescopes. We will present the experimental characterization of a refractive telescope with this method, using a streak camera and a fs laser. We will present how we use this approach was used to experimentally characterize, validate and improve a stray light measurement facility, using a SPAD sensor and a ps laser.

Conference Presentation

Citation Download Citation

L. Clermont, W. Uhring, M. Georges, W. Khaddour, P. Blain, and E. Mazy "A new paradigm in the field of stray light control and characterization enabled by ultrafast time-of-flight imaging", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121881F (29 August 2022); https://doi.org/10.1117/12.2629300

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