4 March 2014 Laser beams with conical refraction patterns
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Laser beams with cone-refracted output from the plane mirror is demonstrated for the first time in lasers based on intracavity conical refraction (CR) phenomenon. Transverse profile of such lasers comprises a crescent ring of CR-like distribution, where any opposite points are of orthogonal linear polarizations. We confirm the existence of such mode of CR lasers by two observations. First, cascaded CR in reflection geometry has been demonstrated for first time and it provides experimental prove that a light beam passed along optic axis of a biaxial crystal, reflected back from a plane mirror and passed again through the crystal is restored. Second, CR cavity mode with CR-like pattern through the plane mirror is experimentally and theoretically demonstrated for the first time.
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Yurii V. Loiko, Yurii V. Loiko, Grigorii S. Sokolovskii, Grigorii S. Sokolovskii, David Carnegie, David Carnegie, Alex Turpin, Alex Turpin, Jordi Mompart, Jordi Mompart, Edik U. Rafailov, Edik U. Rafailov, "Laser beams with conical refraction patterns", Proc. SPIE 8960, Laser Resonators, Microresonators, and Beam Control XVI, 89601Q (4 March 2014); doi: 10.1117/12.2039893; https://doi.org/10.1117/12.2039893

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