title: Spatial temporal wave mixing for space time conversion.
abstract: A nonlinear optical processor that is capable of true real-time conversion of spatial-domain images to ultrafast time-domain optical waveforms is presented. The method is based on four-wave mixing between the optical waves of spectrally decomposed ultrashort pulses and spatially Fourier-transformed quasi-monochromatic images. To achieve efficient wave mixing at a femtosecond rate we utilize a cascaded second-order nonlinearity arrangement in a beta-barium borate crystal with type II phase matching. We use this ultrafast technique to experimentally generate several complex-amplitude temporal waveforms, with efficiency as high as 10%, by virtue of the cascaded nonlinearity arrangement.
authors: D M
authors: DM
authors: Marom
authors: D
authors: D
authors: Panasenko
authors: P C
authors: PC
authors: Sun
authors: Y
authors: Y
authors: Fainman