21.8â
W acetylene-filled hollow-core anti-resonant fiberamplified spontaneous emission source at 3.1â
µm.
Opt Lett
; 49(13): 3636-3639, 2024 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-38950228
ABSTRACT
We report a 20-W-level acetylene-filled nested hollow-core anti-resonant fiber (nested HC-ARF) amplified spontaneous emission (ASE) source at 3.1â
µm. A 1535â
nm hundred-watt wavelength tunable single-frequency fiber laser with a high signal-to-noise ratio and narrow linewidth is built for pumping acetylene molecules. Simultaneously, a homemade 120â
µm core diameter eight-tube nested HC-ARF is used as a gas chamber to obtain high pump laser coupling efficiency. The mid-infrared (mid-IR) ASE source output power of 21.8â
W is achieved at 3.1â
µm through the low-pressure acetylene gas-filled nested HC-ARF, and the slope efficiency is 25.1%. In addition, the ASE source features an excellent beam quality of Mx 2 = 1.16 and My 2 = 1.13. To the best of our knowledge, for the first time, it is a record output power for such mid-infrared ASE sources while maintaining excellent beam quality. This work provides a new way to achieve high-power mid-infrared emission.
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Colección:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Año:
2024
Tipo del documento:
Article