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High-power narrow-linewidth diode laser based on external cavity feedback technology for Yb: YAG pumping

An external cavity feedback structure based on volume Bragg grating is introduced to realize the spectral stabilization and linewidth narrowing of a diode laser with a central wavelength of 968.668 nm and a spectral linewidth of 0.405 nm. A diode laser source producing 1.443 kW power from an output...

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Published in:Japanese Journal of Applied Physics 2022-12, Vol.61 (12), p.120903
Main Authors: Han, Jinliang, Zhang, Jun, Shan, Xiaonan, Zhang, Yawei, Peng, Hangyu, Qin, Li, Wang, Lijun
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container_title Japanese Journal of Applied Physics
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creator Han, Jinliang
Zhang, Jun
Shan, Xiaonan
Zhang, Yawei
Peng, Hangyu
Qin, Li
Wang, Lijun
description An external cavity feedback structure based on volume Bragg grating is introduced to realize the spectral stabilization and linewidth narrowing of a diode laser with a central wavelength of 968.668 nm and a spectral linewidth of 0.405 nm. A diode laser source producing 1.443 kW power from an output fiber with a core diameter of 1000 μ m is achieved by using a spatial beam, combining, and polarization multiplexing technologies. The external cavity feedback and fiber coupling efficiencies exceed 93% and 90%, respectively. Such a high-power narrow-linewidth diode laser can be applied in Yb: YAG pumping efficiently and stably.
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source Institute of Physics; Institute of Physics IOP Science Extra
subjects Bragg gratings
diode laser
external cavity feedback
Feedback
high-power
Laser applications
Multiplexing
narrow-linewidth
Pumping
Semiconductor lasers
volume Bragg grating
title High-power narrow-linewidth diode laser based on external cavity feedback technology for Yb: YAG pumping
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