Laser beam deflection by frequency shifting |
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Authors: | John L. Wilkerson Lee W. Casperson |
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Affiliation: | School of Engineering and Applied Science, University of California, Los Angeles, California 90024, USA |
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Abstract: | A new type of beam scanner has been developed which utilizes frequency shifting of a laser beam followed by deflection of the beam in a dispersive element. Theoretical considerations involve the maximization of the frequency shift and number of resolvable spots. An experimental deflector has been constructed which employs a mode-locked 0.633 μm He-Ne laser, lithium-niobate frequency shifter, and a Fabry-Perot dispersion element. Scans of 15 resolvable spots have been obtained with a theoretical access time of 18.5 ns. |
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