Optical: systems and elements – Optical modulator – Light wave directional modulation
Patent
1995-12-13
1997-10-28
Ben, Loha
Optical: systems and elements
Optical modulator
Light wave directional modulation
359308, 359310, 359563, 359566, 359559, 359154, 349 1, G02F 133
Patent
active
056822626
ABSTRACT:
A method and device for shaping both the temporal and spatial profiles of an input optical pulse to generate an output optical waveform are described. The method includes the step of dispersing the spectral frequencies of the input pulse. These frequencies are then focused with a cylindrical lens to form a two-dimensional optical field. The field is imaged on a mask featuring a two-dimensional array of pixels. The amplitudes, phases, or phases and amplitudes of the two-dimensional optical field are then filtered with the mask. The filtered spectral frequencies are then recombined to form the collective temporal profile of the output waveform. The two-dimensional optical field is then imaged in a sample plane to form the spatially coherent regions.
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Nelson Keith A.
Wefers Marc M.
Ben Loha
Massachusetts Institute of Technology
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