Parametric down-conversion for light beams possessing orbital angular momentum
- 1 May 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 59 (5) , 3950-3952
- https://doi.org/10.1103/physreva.59.3950
Abstract
We investigate the spontaneous parametric down-conversion for light beams possessing orbital angular momentum. The experimental results indicate that the orbital angular momentum is not conserved within the classical light fields. This is in contrast to second harmonic generation where the conservation of orbital angular momentum leads to a well-defined mode transformation. We attribute this difference in behavior to the loss of spatial coherence within each of the down-converted fields.Keywords
This publication has 15 references indexed in Scilit:
- Second-harmonic generation and the conservation of orbital angular momentum with high-order Laguerre-Gaussian modesPhysical Review A, 1997
- Conversion of topological charge of optical vortices in a parametric frequency converterOptics Communications, 1997
- Mechanical equivalence of spin and orbital angular momentum of light: an optical spannerOptics Letters, 1997
- Second-harmonic generation and the orbital angular momentum of lightPhysical Review A, 1996
- Optical angular-momentum transfer to trapped absorbing particlesPhysical Review A, 1996
- Optical wavefront dislocations and their propertiesOptics Communications, 1995
- Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase SingularityPhysical Review Letters, 1995
- Optics of light beams with screw dislocationsOptics Communications, 1993
- Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modesPhysical Review A, 1992
- Power and Bandwidth of Spontaneous Parametric EmissionPhysical Review B, 1968