High-accuracy calibration of an adaptive optics system using a phase shifting diffraction interferometer

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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 ... continued below

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2.2 Megabytes pages

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Bauman, B J; Campbell, E W; Olivier, S S & Sweider, D R June 23, 1999.

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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 ({approximately} 5 nm RMS) of the optical properties of the AO system.

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2.2 Megabytes pages

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  • Society of Photo-Optical Instrumentation Engineers, SPIE's 44th Annual Meeting, Denver, CO (US), 07/18/1999--07/23/1999

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  • Report No.: UCRL-JC-134805
  • Report No.: YN0100000
  • Report No.: 97-ERD-037
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 10421
  • Archival Resource Key: ark:/67531/metadc627517

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  • June 23, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:26 p.m.

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Bauman, B J; Campbell, E W; Olivier, S S & Sweider, D R. High-accuracy calibration of an adaptive optics system using a phase shifting diffraction interferometer, article, June 23, 1999; California. (digital.library.unt.edu/ark:/67531/metadc627517/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.