20 February 2007 Holographic wavefront sensor: fast sensing, no computing
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Proceedings Volume 6488, Practical Holography XXI: Materials and Applications; 64880I (2007); doi: 10.1117/12.701231
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States
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.
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Geoff Andersen, Fassil Ghebremichael, Ken Gurley, "Holographic wavefront sensor: fast sensing, no computing", Proc. SPIE 6488, Practical Holography XXI: Materials and Applications, 64880I (20 February 2007); doi: 10.1117/12.701231; http://dx.doi.org/10.1117/12.701231
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KEYWORDS
Holograms

Sensors

Wavefront sensors

Holography

Wavefronts

Multiplexing

Computer generated holography

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