Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Wave-front sensing with time-of-flight phase diversity

Not Accessible

Your library or personal account may give you access

Abstract

We present a new way to sense atmospheric wave-front phase distortion. Short collimated pulses of laser light at 350 nm are projected from a small auxilliary telescope. Rayleigh scattering from each pulse is recorded over a wide range of height through the main telescope aperture in a continuous sequence of fast video frames by a detector conjugate to mid-height. Phase diversity is thus naturally introduced as the pulses approach and pass through focus. We show that an iterative algorithm can extract the phase structure from the recorded images and do so with a much higher signal-to-noise ratio than is possible with existing techniques. If the requirements for real-time data recording and reduction can be met, the new method will address the need for tomographic wave-front sensing at planned 30-m-class telescopes.

© 2001 Optical Society of America

Full Article  |  PDF Article
More Like This
Laser beacon wave-front sensing without focal anisoplanatism

D. F. Buscher, G. D. Love, and R. M. Myers
Opt. Lett. 27(3) 149-151 (2002)

Sensing wave-front amplitude and phase with phase diversity

Stuart M. Jefferies, Michael Lloyd-Hart, E. Keith Hege, and James Georges
Appl. Opt. 41(11) 2095-2102 (2002)

Generalized phase diversity for wave-front sensing

Heather I. Campbell, Sijiong Zhang, Alan H. Greenaway, and Sergio Restaino
Opt. Lett. 29(23) 2707-2709 (2004)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved