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Spin-Orbit Mapping of Light.

Liang Fang1, Hongya Wang1, Yize Liang1

  • 1Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.

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|December 22, 2021
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Summary
This summary is machine-generated.

We demonstrate efficient spin-orbit mapping of light in few-mode fibers, converting spin angular momentum (SAM) to orbital angular momentum (OAM). This technique offers high efficiency, broad bandwidth, and scalability for advanced optical applications.

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Area of Science:

  • Optics and Photonics
  • Quantum Optics

Background:

  • Spin-orbit photonics explores the interplay between light's spin angular momentum (SAM) and orbital angular momentum (OAM).
  • Mode degeneracy lifting in optical fibers is crucial for manipulating light properties.

Purpose of the Study:

  • To demonstrate spin-orbit mapping of light in a few-mode fiber.
  • To investigate the conversion of SAM to OAM and polarization rotation to field pattern rotation.

Main Methods:

  • Utilizing a few-mode fiber with mode degeneracy lifting (TM_{01} and TE_{01}).
  • Analyzing the spin-orbit mapping phenomena through experimental observation.

Main Results:

  • Achieved efficient spin-orbit mapping from intrinsic SAM to OAM.
  • Demonstrated mapping from polarization direction rotation to field pattern rotation.
  • Exhibited high efficiency, large bandwidth, and suitability for short pulses.

Conclusions:

  • The demonstrated spin-orbit mapping is efficient, broadband, and scalable to high-order OAM states.
  • This technique holds promise for advanced applications in modern optics and photonics.