Abstract
The second-harmonic generation with laser beams transformed by internal conicalrefraction in a biaxial crystal was studied in a cascaded two-crystal arrangement, wherethe biaxial crystal transformed the input Gaussian beam and another nonlinearcrystal was used for frequency doubling of the produced conical refraction pattern.Several specific second-harmonic beam profiles obtained for various positions of thenonlinear crystal along the beam propagation direction are considered and discussed.
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