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Paraxial theory of sum-frequency generation by side-walk alignment and phase-matching in uniaxial crystals
non-linear optics, birefringence, sum-frequency generation
2011/9/5
A formalism in terms of Hertz potentials is presented describing sum-frequency generation in a uniaxial non-linear crystal. A scheme is proposed consisting in aligning the side-walk propagation of ext...
A new optical chip that allows pairs of photons to take a quantum walk has been unveiled by an international team of physicists. The tiny device contains an array of 21 coupled optical waveguides and ...