“…We reported a high-power narrow-linewidth 780 nm diode laser based on the external cavity feedback technology of VBG. 21) However, the object in the previous study is a diode laser bar, and the one VBG is used to feedback 19 emitters. The object of the present study is a single emitter, and the one VBG is used to feedback one single emitter.…”
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 μm 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.
“…We reported a high-power narrow-linewidth 780 nm diode laser based on the external cavity feedback technology of VBG. 21) However, the object in the previous study is a diode laser bar, and the one VBG is used to feedback 19 emitters. The object of the present study is a single emitter, and the one VBG is used to feedback one single emitter.…”
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 μm 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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