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Proceedings Paper

High-speed zonal wavefront sensing
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Paper Abstract

High speed wavefront sensing is important in real time profile analysis, analysis of fluid dynamics, ophthalmology and so on. Conventional Shack-Hartmann wavefront sensor uses an array of tiny lenses and a digital camera to record the focal spot array. Thus the frame rate of the sensor depends on the camera. In this paper we present a zonal wavefront sensor where the array of lenses is replaced by an array of gratings followed by a focusing lens. The gratings can be configured to generate just one array of focal spots. This reduction in row of the focal spot array leads to increase in the frame rate of the proposed wavefront sensor.

Paper Details

Date Published: 26 November 2012
PDF: 6 pages
Proc. SPIE 8557, Optical Design and Testing V, 85570A (26 November 2012); doi: 10.1117/12.999893
Show Author Affiliations
Biswajit Pathak, Indian Institute of Technology Guwahati (India)
Abhijit Das, Indian Institute of Technology Guwahati (India)
Bosanta R. Boruah, Indian Institute of Technology Guwahati (India)

Published in SPIE Proceedings Vol. 8557:
Optical Design and Testing V
Yongtian Wang; Chunlei Du; Hong Hua; Kimio Tatsuno; H. Paul Urbach, Editor(s)

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