Second-harmonic generation and the conservation of orbital angular momentum with high-order Laguerre-Gaussian modes
- 1 November 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 56 (5) , 4193-4196
- https://doi.org/10.1103/physreva.56.4193
Abstract
Laguerre-Gaussian modes of various order are frequency doubled. The azimuthal phase structure of the second-harmonic light is measured directly by interfering the beam with its mirror image. We show that the orbital angular momentum per photon is doubled, so conserving the orbital angular momentum in the light beam. The frequency-doubled output beam is shown to have a Gegenbauer-Gaussian amplitude distribution at the beam waist. The beam can be described as a summation of Laguerre-Gaussian modes that interfere so that it changes form with propagation, but the distribution at the beam waist is reproduced in the far field.Keywords
This publication has 12 references indexed in Scilit:
- Astigmatic laser mode converters and transfer of orbital angular momentumPublished by Elsevier ,2002
- Radiation forces on a two-level atom in a σ+ − σ− configuration of Laguerre-Gaussian beamsOptics 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
- Atom dynamics in multiple Laguerre-Gaussian beamsPhysical Review A, 1996
- Optical angular-momentum transfer to trapped absorbing particlesPhysical Review A, 1996
- The Poynting vector in Laguerre-Gaussian laser modesOptics Communications, 1995
- Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase SingularityPhysical Review Letters, 1995
- Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modesPhysical Review A, 1992
- Parametric Interaction of Focused Gaussian Light BeamsJournal of Applied Physics, 1968