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Orbital angular momentum exchange in an optical parametric oscillator

M. Martinelli·J. A. O. Huguenin·P. Nussenzveig·A. Z. Khoury
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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.

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M. Martinelli, J. A. O. Huguenin, P. Nussenzveig, A. Z. Khoury. 2004-03-01. Orbital angular momentum exchange in an optical parametric oscillator. https://doi.org/10.1103/physreva.70.013812

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