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Updated: Aug 24, 2026
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Diffraction-limited polarized emission from a multimode ytterbium fiber amplifier after a nonlinear beam converter
L Lombard1, A Brignon, J P Huignard
1Thales Research and Technology-France, Domaine de Corbeville, 91404 Orsay, France. laurent.lombard@thalesgroup.com
Abstract:
The multimode and depolarized output beam of a highly multimode diode-pumped Yb-doped fiber amplifier is converted to a diffraction-limited, linearly polarized beam by a self-referencing two-wave-mixing process in an infrared-sensitive photorefractive crystal (Rh:BaTiO3). As much as 11.6 W of single-mode output is achieved with a 78% multimode-to-single-mode photorefractive conversion efficiency.
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