Ultrafast unidirectional beam deflection using an electrooptictraveling phase grating with periodic domain inversion

摘要

We report a new electrooptic traveling-phase grating with periodicndomain inversion and its application to ultrafast unidirectional beamndeflection. The electrooptic traveling phase grating utilizes Raman-Nathndiffraction to spatially separate input light to many diffracted beamsnon the far-field plane. Then, unidirectional optical beam deflection cannbe achieved by adjusting amplitudes and phases of the diffracted beams.nIn the experiment, ultrafast unidirectional deflection by the travelingnphase grating is demonstrated at 16.25 GHz using a simple phase-onlyncontrol