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Opt Lett. 2004 Feb 1;29(3):295-7.

Independent phase and amplitude control of a laser beam by use of a single-phase-only spatial light modulator.

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Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.


A phase-only spatial light modulator is used in conjunction with a spatial filter to provide independent control of the phase and amplitude of a laser beam. Continuous amplitude modulation of the beam is achieved with a resolution relevant to beam shaping of high-energy laser beams. Amplitude beam correction in a closed loop is demonstrated.


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