Pupil-imaging wavefront gradient sensor

Nigel Pugh, Daniel R. Lobb, David D. Walker, Thomas L. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

A wavefront sensor design is presented. The wavefront sensor will be applied typically to adaptive correction of a ground based astronomical telescope. It comprises a pair of crossed biprisms to act as star image splitters in the telescope image plane, splitting the incident wave into four beams. The biprisms are followed by a lens which forms four pupil images. These exhibit intensity map differences related to the phase gradient of the incident wave, providing that the point spread function overlaps the biprism crossing. This allows standard wavefront reconstruction algorithms to be used to reconstruct the phase map over the aperture. The results from a computer diffraction simulation of this system are presented to show the useful range of the sensor. In addition, a design for an experimental prototype system is presented.

Original languageEnglish
Title of host publicationAdaptive Optical Systems and Applications
Subtitle of host publicationSPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation
EditorsRobert K. Tyson, Robert Q. Fugate
PublisherSPIE
Pages312-317
Number of pages6
ISBN (Print)0819418935, 9780819418937
DOIs
Publication statusPublished - 25 Aug 1995
Externally publishedYes
EventAdaptive Optical Systems and Applications - San Diego, United States
Duration: 10 Jul 199511 Jul 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2534
ISSN (Print)0277-786X

Conference

ConferenceAdaptive Optical Systems and Applications
CountryUnited States
CitySan Diego
Period10/07/9511/07/95

Fingerprint

pupils
Wavefronts
Wave Front
Wavefront Sensor
Imaging
Gradient
Imaging techniques
Telescopes
Sensor
gradients
sensors
Sensors
Wavefront Reconstruction
Astronomical Telescopes
telescopes
Antenna grounds
Optical transfer function
Reconstruction Algorithm
point spread functions
Stars

Cite this

Pugh, N., Lobb, D. R., Walker, D. D., & Williams, T. L. (1995). Pupil-imaging wavefront gradient sensor. In R. K. Tyson, & R. Q. Fugate (Eds.), Adaptive Optical Systems and Applications: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation (pp. 312-317). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2534). SPIE. https://doi.org/10.1117/12.217747
Pugh, Nigel ; Lobb, Daniel R. ; Walker, David D. ; Williams, Thomas L. / Pupil-imaging wavefront gradient sensor. Adaptive Optical Systems and Applications: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation. editor / Robert K. Tyson ; Robert Q. Fugate. SPIE, 1995. pp. 312-317 (Proceedings of SPIE - The International Society for Optical Engineering).
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Pugh, N, Lobb, DR, Walker, DD & Williams, TL 1995, Pupil-imaging wavefront gradient sensor. in RK Tyson & RQ Fugate (eds), Adaptive Optical Systems and Applications: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation. Proceedings of SPIE - The International Society for Optical Engineering, vol. 2534, SPIE, pp. 312-317, Adaptive Optical Systems and Applications, San Diego, United States, 10/07/95. https://doi.org/10.1117/12.217747

Pupil-imaging wavefront gradient sensor. / Pugh, Nigel; Lobb, Daniel R.; Walker, David D.; Williams, Thomas L.

Adaptive Optical Systems and Applications: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation. ed. / Robert K. Tyson; Robert Q. Fugate. SPIE, 1995. p. 312-317 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2534).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - A wavefront sensor design is presented. The wavefront sensor will be applied typically to adaptive correction of a ground based astronomical telescope. It comprises a pair of crossed biprisms to act as star image splitters in the telescope image plane, splitting the incident wave into four beams. The biprisms are followed by a lens which forms four pupil images. These exhibit intensity map differences related to the phase gradient of the incident wave, providing that the point spread function overlaps the biprism crossing. This allows standard wavefront reconstruction algorithms to be used to reconstruct the phase map over the aperture. The results from a computer diffraction simulation of this system are presented to show the useful range of the sensor. In addition, a design for an experimental prototype system is presented.

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Pugh N, Lobb DR, Walker DD, Williams TL. Pupil-imaging wavefront gradient sensor. In Tyson RK, Fugate RQ, editors, Adaptive Optical Systems and Applications: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation. SPIE. 1995. p. 312-317. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.217747