Abstract

We investigate the transfer of orbital angular momentum (OAM) in a type-II optical parametric oscillator (OPO). We produce different kinds of transverse modes on the downconverted beams by pumping the OPO with a first-order Laguerre–Gaussian beam well above threshold. Different operation regimes are attained showing a rich variety of transverse modes bearing OAM.

© 2008 Optical Society of America

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