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1 August 2009 Holographic wavefront sensor
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We have constructed a new type of modal wavefront sensor that uses a multiplexed hologram and position-sensing detectors to measure the amplitudes of a preselected set of eight Zernike modes in an input beam. The measurement is all optical, with the calculations made in encoding the holograms themselves. The result is a sensor with no computational overhead or postprocessing that has the potential to operate at megahertz speeds without the need for computer calculations. We have built and tested a prototype device, demonstrating its operation both as a stand-alone wavefront sensor and in a closed-loop adaptive optics control system.
©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)
Geoff P. Andersen, Luis C. Dussan, Fassil Ghebremichael, and Kenny Chen "Holographic wavefront sensor," Optical Engineering 48(8), 085801 (1 August 2009).
Published: 1 August 2009


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