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Proceedings Paper

Holographic wavefront sensor: fast sensing, no computing
Author(s): Geoff Andersen; Fassil Ghebremichael; Ken Gurley
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Paper Abstract

We present results of a fast holographic wavefront sensor. The modal device consists of a multiplexed hologram designed to diffract a single input beam into multiple output beams depending on the amplitude of particular Zernike terms. The aberration and amplitude are determined by the spatial location and intensity of the reconstructed focused spots. The sensing does not require any calculations, so the device is simple, compact and fast. In fact, using several position sensing detectors (PSD), a full description of the wave aberration can be obtained at rates in excess of 100 kHz. The holographic wavefront sensor can be reconfigured for any type of basis set, and is easily adaptable to laser mode profiling. In this talk we will present results of the both the theory and operation of our holographic wavefront sensor.

Paper Details

Date Published: 20 February 2007
PDF: 8 pages
Proc. SPIE 6488, Practical Holography XXI: Materials and Applications, 64880I (20 February 2007); doi: 10.1117/12.701231
Show Author Affiliations
Geoff Andersen, U.S. Air Force Academy (United States)
Fassil Ghebremichael, Lockheed Martin Missile and Fire Control (United States)
Ken Gurley, Lockheed Martin Missile and Fire Control (United States)

Published in SPIE Proceedings Vol. 6488:
Practical Holography XXI: Materials and Applications
Roger A. Lessard; Hans I. Bjelkhagen, Editor(s)

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