Optically trapped objects are rotated controllably in the interference pattern between a Laguerre-Gaussian (LG) beam and a Gaussian beam. In this work the interference pattern is analysed and its properties as it propagates are modelled, showing the important role played by the Guoy-phase of the two interfering beams. An analysis of producing controlled rotation of the interference pattern using a glass plate is presented demonstrating the ease with which the rotation can be controlled.
Bibliographical noteFunding Information:
The authors would like to thank Fritz Akerboom for preparing the glass rods and the Engineering and Physical Science Research Council (EPSRC) for their support. K.V.-S acknowledges the support of CONACYT, Mexico and Dr. Sabino Chávez-Cerda.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering