3 November 2016 Highly coherent octave-spanning supercontinuum generation in CS2-filled photonic crystal fiber with strong slow nonlinearity
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Abstract
In this paper, the supercontinuum (SC) generation in a carbon disulfide (CS2)-filled photonic crystal fiber (PCF) with strong slow nonlinearity is investigated. When the PCF is pumped at 1.55 μm in the anomalous dispersion region, we obtain highly coherent SC spanning from 0.99 to 2.32 μm, at -40 dB level. Moreover, the influences of the slow nonlinearity, the input pulse width, the pulse peak power, the fiber length, and the temperature on the supercontinuum generation (SCG) are studied. The role of the slow nonlinearity in enhancing the coherence of SC is proved. To our best knowledge, this is the first demonstration on generating the octave-spanning SC with high coherence using the slow nonlinearity of CS2. CS2 is a material that has high nonlinearity coefficient and well transparency in infrared. What’s more, the slow nonlinearity is very strong in this material.
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Liyun Wang, Jinhui Yuan, Kuiru Wang, Zhe Kang, Xinzhu Sang, Chongxiu Yu, Binbin Yan, "Highly coherent octave-spanning supercontinuum generation in CS2-filled photonic crystal fiber with strong slow nonlinearity", Proc. SPIE 10029, Quantum and Nonlinear Optics IV, 100291G (3 November 2016); doi: 10.1117/12.2247045; https://doi.org/10.1117/12.2247045
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