Transfer of orbital angular momentum to a low-index particle trapped in optical tweezers, was demonstrated. The particle was constrained to the dark regions between adjacent bright rings of a high-order Bessel beam. Particle rotation rates were consistent with a computer model, which considered scattering as the dominant mechanism for transfer of orbital angular momentum. Quantitative comparison between theory and experiment showed good agreement for rotation rates.
|Number of pages||8|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2002 Dec|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics