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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Published on: February 28, 2016

Transverse mode switchable fiber laser through wavelength tuning.

Biao Sun1, Anting Wang, Lixin Xu

  • 1Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China.

Optics Letters
|March 5, 2013
PubMed
Summary

This fiber laser design achieves switchable transverse modes by tuning the wavelength, utilizing a few-mode fiber Bragg grating. This method yields high-quality spatial modes and cylindrical vector polarization outputs.

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Fiber Optics

Background:

  • Fiber lasers offer versatile light sources.
  • Controlling spatial modes in lasers is crucial for advanced applications.
  • Few-mode fibers enable complex light field generation.

Purpose of the Study:

  • To demonstrate a novel fiber laser design for switchable transverse mode operation.
  • To investigate the relationship between wavelength and transverse modes in a fiber laser.
  • To achieve high-quality spatial mode outputs and cylindrical vector polarization.

Main Methods:

  • Utilizing a few-mode fiber Bragg grating with inherent mode-wavelength association.
  • Implementing a tunable filter within the fiber laser cavity for wavelength selection.
  • Incorporating polarization controllers to achieve cylindrical vector polarization.

Main Results:

  • Successfully demonstrated switchable transverse mode output by tuning the laser's wavelength.
  • Achieved high spatial mode quality for each selected transverse mode.
  • Obtained single-wavelength operation with narrow linewidth for each mode.
  • Realized cylindrical vector polarized output modes through polarization control.

Conclusions:

  • The proposed fiber laser design enables effective control over transverse modes via wavelength tuning.
  • This approach provides a flexible platform for generating various spatial modes with excellent quality.
  • The integration of polarization control opens possibilities for applications requiring vector beams.