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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Spin-to-orbital angular momentum conversion in a strongly focused optical beam.
Yiqiong Zhao1, J Scott Edgar, Gavin D M Jeffries
1Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA.
Physical Review Letters
|October 13, 2007
Summary
Optical spin-to-orbital angular momentum conversion was demonstrated in homogeneous media. This light property alteration affects trapped particle rotation speeds, aligning with theoretical predictions.
Area of Science:
- Optics and Photonics
- Quantum Mechanics
Background:
- Photon angular momentum, encompassing both spin and orbital components, is a key characteristic of light.
- Understanding light-matter interactions is crucial for advancements in optical technologies.
Purpose of the Study:
- To demonstrate and investigate optical spin-to-orbital angular momentum conversion.
- To analyze the impact of this conversion on the dynamics of trapped particles.
Main Methods:
- Theoretical modeling of spin-to-orbital angular momentum conversion in focused light beams.
- Experimental verification using tightly focused optical beams and trapped particles.
Main Results:
- Successful demonstration of spin-to-orbital angular momentum conversion in a homogeneous and isotropic medium.
- Observed alterations in the orbital rotation speeds of trapped particles due to the conversion.
- Experimental results align with theoretical predictions.
Conclusions:
- Optical spin-to-orbital angular momentum conversion is achievable in simple, uniform media.
- This conversion provides a mechanism to modify particle dynamics using light's intrinsic properties.
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