Transfer of orbital angular momentum in a multimode parametric oscillator.
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.
Dos Santos
B Coutinho
BC
Instituto de Física-Universidade Federal Fluminense, 24210-346 Niterói-RJ, Brazil.
Khoury
A Z
AZ
Huguenin
J A O
JA