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We present a method to calibrate wavefront distortion of the spatial light modulator setup by registering far-field images of several Gaussian beams diffracted off the modulator. The Fourier transform of resulting interference images reveals phase differences among typically five movable points on the modulator. Repeating this measurement yields a wavefront… (More)
Theoretical analysis of the performance of the acousto-optic light deflector is described. Detailed calculations for LiIO3--SF6 glass structure including the influence of the bonding layer and Q-factor on the frequency response of the deflector are presented. A method of increasing the bandwidth in the presence of the bonding layer is given.
Multiphoton processes in dense atomic vapors such as four-wave mixing or coherent blue light generation are typically viewed from single-atom perspective. Here we study the surprisingly important effect of phase matching near two-photon resonances that arises due to spatial extent of the atomic medium within which the multiphoton process occurs. The… (More)