Mid-infrared supercontinuum generation in single mode fluoride fiber

Lai Liu; Guanshi Qin; Qijun Tian; Weiping Qin

doi:10.1117/12.920265

14 March 2012 Mid-infrared supercontinuum generation in single mode fluoride fiber

Lai Liu, Guanshi Qin, Qijun Tian, Weiping Qin

Proceedings Volume 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology; 833019 (2012) https://doi.org/10.1117/12.920265
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

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.

Citation Download Citation

Lai Liu, Guanshi Qin, Qijun Tian, and Weiping Qin "Mid-infrared supercontinuum generation in single mode fluoride fiber", Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 833019 (14 March 2012); https://doi.org/10.1117/12.920265

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