Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase Singularity
- 31 July 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 75 (5) , 826-829
- https://doi.org/10.1103/physrevlett.75.826
Abstract
Black or reflective particles can be trapped in the dark central minimum of a doughnut laser beam produced using a high efficiency computer generated hologram. Such beams carry angular momentum due to the helical wave-front structure associated with the central phase singularity even when linearly polarized. Trapped absorptive particles spin due to absorption of this angular momentum transferred from the singularity beam. The direction of spin can be reversed by changing the sign of the singularity.Keywords
This publication has 10 references indexed in Scilit:
- Orbital angular momentum and nonparaxial light beamsPublished by Elsevier ,2002
- Optical Particle Trapping with Higher-order Doughnut Beams Produced Using High Efficiency Computer Generated HologramsJournal of Modern Optics, 1995
- Measurement of the Optical Force and Trapping Range of a Single-beam Gradient Optical Trap for Micron-sized Latex SpheresJournal of Modern Optics, 1994
- Laser beams with phase singularitiesOptical and Quantum Electronics, 1992
- Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modesPhysical Review A, 1992
- Collective Rotation of Molecules Driven by the Angular Momentum of Light in a Nematic FilmPhysical Review Letters, 1986
- Optical torque exerted on a homogeneous sphere levitated in the circularly polarized fundamental-mode laser beamJournal of the Optical Society of America B, 1985
- Applications of Laser Radiation PressureScience, 1980
- Optical Motion Control Applied to the Atmospheric Cloud Physics Laboratory (ACPL)AIAA Journal, 1979
- Mechanical Detection and Measurement of the Angular Momentum of LightPhysical Review B, 1936