HIGH-RESOLUTION ADAPTIVE OPTICS USING AN INTERFERENCE PHASE LOOP

Citation
Th. Barnes et al., HIGH-RESOLUTION ADAPTIVE OPTICS USING AN INTERFERENCE PHASE LOOP, Optics communications, 132(5-6), 1996, pp. 494-502
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Optics
Journal title
ISSN journal
0030-4018
Volume
132
Issue
5-6
Year of publication
1996
Pages
494 - 502
Database
ISI
SICI code
0030-4018(1996)132:5-6<494:HAOUAI>2.0.ZU;2-0
Abstract
The Interference Phase Loop is an interferometer with feedback of the output intensity to a phase modulator in one of the interferometer arm s. When a spatial optical phase modulator is used, the modulator phase distribution approximates to the conjugate of the spatial phase distr ibution in the interferometer, and so the device has potential for app lication in adaptive optics. We have implemented an interference phase loop using a high-resolution liquid crystal spatial light modulator ( PAL-SLM) and a common path radial shearing interferometer. We show how the system can be analysed in simple terms, derive some design and op erating criteria, and demonstrate diffraction-limited real-time aberra tion correction of arbitrary input wavefronts using the system. Becaus e of the nature of the interferometer used, our system has the potenti al to operate in white light.