Measuring phase errors of an array or segmented mirror with a single far-field intensity distribution

Robert K. Tyson

doi:10.1117/12.48794

1 December 1991 Measuring phase errors of an array or segmented mirror with a single far-field intensity distribution

Robert K. Tyson

Proceedings Volume 1542, Active and Adaptive Optical Systems; (1991) https://doi.org/10.1117/12.48794
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A technique for extracting the relative phase (piston) differences between telescopes of a phased array or segments of a mirror is examined. The analysis concentrates on examination of measuring the relative phase of three segments with a single far-field intensity distribution. The contour of the first minimum in the far-field diffraction spot is directly related to the relative phase differences between three segments or telescopes. The paper will address various methods for extracting the information and using it to phase the segments or telescopes. Restrictions to the technique and questions regarding uniqueness of the solution are addressed. Limitations due to finite resolution in the far-field, segment or telescope tilt, dynamic beam jitter, and higher-order aberrations are quantified by computer simulation. Methods of extending the technique to real-time control are proposed.

Citation Download Citation

Robert K. Tyson "Measuring phase errors of an array or segmented mirror with a single far-field intensity distribution", Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); https://doi.org/10.1117/12.48794

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