Controlling orbital angular momentum in microscopic and topological systems

Daryl Preece; Zhiwei Shi; Zhigang Chen; Halina Rubinsztein-Dunlop

doi:10.1117/12.2573767

15 June 2020 Controlling orbital angular momentum in microscopic and topological systems

Daryl Preece, Zhiwei Shi, Zhigang Chen, Halina Rubinsztein-Dunlop

Proceedings Volume 11522, Optical Manipulation and Structured Materials Conference 2020; 115221H (2020) https://doi.org/10.1117/12.2573767
Event: SPIE Technologies and Applications of Structured Light, 2020, Yokohama, Japan

Abstract

The idea of exchanging angular momentum between microscopic parts and the outside world has been a key idea in many recent experiments involving nano-photonic technologies. Indeed, many experiments with optical tweezers involve the application of tailored beams with orbital angular momentum to microscopic particles. A variety of such beams can be created with modern computer-generated holograms such as spatial light modulators. However, often little consideration is given to the application of these beams after they have been generated. Here we will discuss the measurement and application of beams with orbital angular momentum under the microscope. Specifically, measurement of the applied optical torque, distortion and rotation of beams carrying OAM. Finally, we will discuss the application of vortices in topological insulators.

Citation Download Citation

Daryl Preece, Zhiwei Shi, Zhigang Chen, and Halina Rubinsztein-Dunlop "Controlling orbital angular momentum in microscopic and topological systems", Proc. SPIE 11522, Optical Manipulation and Structured Materials Conference 2020, 115221H (15 June 2020); https://doi.org/10.1117/12.2573767

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KEYWORDS

Beam splitters

Dielectrics

Microscopes

Objectives

Polarization

Beam propagation method

Distortion

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