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Proceedings Paper

Mid-infrared supercontinuum generation in single mode fluoride fiber
Author(s): Lai Liu; Guanshi Qin; Qijun Tian; Weiping Qin
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Paper Abstract

We numerically investigate mid-infrared supercontinuum generation in single mode fluoride fiber pumped by 1.56μm femtosecond fiber lasers. To get high energy conversion efficiency in mid-infrared region, the ratio of power generated in 2.5 ~ 5 μm range to the total input power for supercontinuum generation is optimized by varying the pulse width, peak power and fiber length. The long wavelength edge of the supercontinuum spectrum can be extended to 5μm in a 9 cm long fluoride fiber pumped by a 1.56μm fiber laser with a pulse width of 200 fs and a peak power of 2 MW, and the corresponding ratio of power generated in 2.5 ~ 5 μm range to the total input power is about 29.6%. The spectral broadening is mainly caused by self-phase modulation, stimulated Raman scattering and four-wave mixing. The simulated results show that high energy conversion power supercontinuum light source in 2.5 ~ 5 μm range could be obtained in fluoride fibers pumped by 1.56μm femtosecond fiber lasers.

Paper Details

Date Published: 14 March 2012
PDF: 10 pages
Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 833019 (14 March 2012); doi: 10.1117/12.920265
Show Author Affiliations
Lai Liu, Jilin Univ. (China)
Guanshi Qin, Jilin Univ. (China)
Qijun Tian, Jilin Univ. (China)
Weiping Qin, Jilin Univ. (China)


Published in SPIE Proceedings Vol. 8330:
Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology

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