Journal
OPTICAL AND QUANTUM ELECTRONICS
Volume 53, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/s11082-021-02761-x
Keywords
Mid-infrared; Dispersion; Supercontinuum generation
Funding
- NSAF, China [U1830123]
- National Natural Science Foundation of China [61627802]
- High-Level Educational Innovation Team Introduction Plan of Jiangsu, China
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This paper theoretically investigates the supercontinuum generation using a novel photonic-crystal pillar waveguide (PCPW) spanning from near-infrared (NIR) to mid-infrared. By optimizing the PCPW design and dispersion properties, the study achieves ultra-broadband spectral broadening from 1 to 10 micrometers under relatively lower peak power pump pulses. The proposed PCPW offers an efficient waveguide structure for generating ultra-broadband supercontinuum with shorter wavelength laser sources.
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 mu m with four zero dispersion wavelengths. Pumped at a relatively shorter NIR wavelength of 1.82 mu m, the SCG of optimized PCPW possesses an ultra-broadband spectral broadening from 1 to 10 mu m 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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