Abstract
In this paper, we theoretically investigate the supercontinuum generation (SCG) spanning from near-infrared (NIR) to mid-infrared utilizing a novel photonic-crystal pillar waveguide (PCPW). The PCPW design and associated dispersion properties have been thoroughly studied and optimized, resulting in a flat and low dispersion profile from 1.67 to 7.31 µm with four zero dispersion wavelengths. Pumped at a relatively shorter NIR wavelength of 1.82 µm, the SCG of optimized PCPW possesses an ultra-broadband spectral broadening from 1 to 10 µm under pump pulses with a low peak power of 2 kW. The proposed PCPW can thus provide an efficient waveguide structure to generate ultra-broadband supercontinuum pumped by shorter wavelength laser sources of less peak power.
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Acknowledgements
This work is supported by NSAF, China (No. U1830123), the National Natural Science Foundation of China (No. 61627802), and the High-Level Educational Innovation Team Introduction Plan of Jiangsu, China.
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Ziyang, M., Li, L. & Xiaowu, N. Ultra-broadband mid-infrared supercontinuum generation in photonic-crystal pillar waveguides pumped at 1.82 μm. Opt Quant Electron 53, 121 (2021). https://doi.org/10.1007/s11082-021-02761-x
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DOI: https://doi.org/10.1007/s11082-021-02761-x