Orbital angular momentum exchange in an optical parametric oscillator
arXiv:physics/0403021 · doi:10.1103/PhysRevA.70.013812
Abstract
We present a study of orbital angular momentum transfer from pump to down-converted beams in a type-II Optical Parametric Oscillator. Cavity and anisotropy effects are investigated and demostrated to play a central role in the transverse mode dynamics. While the idler beam can oscillate in a Laguerre-Gauss mode, the crystal birefringence induces an astigmatic effect in the signal beam that prevents the resonance of such mode.
10 pages, 8 figures, regular article
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