Physics – Optics
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3762..237c&link_type=abstract
Proc. SPIE Vol. 3762, p. 237-244, Adaptive Optics Systems and Technology, Robert K. Tyson; Robert Q. Fugate; Eds.
Physics
Optics
1
Scientific paper
A phase-shifting diffraction interferometer (PSDI) has been integrated into an adaptive optics (AO) system developed by LLNL for use on the three meter Shane telescope at Lick Observatory. The interferometer is an all fiber optic design, which is extremely compact. It is useful for calibrating the control sensors, measuring the aberrations of the entire AO optical train, and measuring the influence functions of the individual actuators on the deformable mirror. The PSDI is particularly well suited for this application because it measures converging, quasi-spherical wavefronts, such as are produced by an AO imaging system. Thus, a PSDI can be used to measure the aberrations of the entire AO system, in-situ and without errors introduced by auxiliary optics. This provides an extremely accurate measurement of the optical properties of the AO system.
Bauman Brian J.
Campbell Eugene W.
Dillon Daren R.
Olivier Scot S.
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