Transfer of orbital angular momentum to an optically trapped low-index particle
- 6 December 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 66 (6) , 063402
- https://doi.org/10.1103/physreva.66.063402
Abstract
We demonstrate the transfer of orbital angular momentum from a light beam to a trapped low-index particle. The particle is trapped in a dark annular region of a high-order Bessel beam and rotates around the beam axis due to scattering from the helical wave fronts of the light beam. A general theoretical geometrical optics model is developed that, applied to our specific situation, corroborates tweezing and transfer of orbital angular momentum to the low-index particle. Good quantitative agreement between theory and experiment for particle rotation rates is observed.Keywords
This publication has 25 references indexed in Scilit:
- Trapping and manipulation of low-index particles in a two-dimensional interferometric optical trapOptics Letters, 2001
- Simultaneous trapping of low-index and high-index microparticles observed with an optical-vortex trapJournal of the Optical Society of America B, 1999
- Optical alignment and spinning of laser-trapped microscopic particlesNature, 1998
- Trapping of low-index microparticles in an optical vortexJournal of the Optical Society of America B, 1998
- Interferometric optical tweezersOptics Communications, 1997
- Optical vortex trapping of particlesOptics Letters, 1996
- 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
- Observation of a single-beam gradient force optical trap for dielectric particlesOptics Letters, 1986
- Optical levitation in high vacuumApplied Physics Letters, 1976