Ultrabroadband, Midinfrared Supercontinuum Generation in Dispersion Engineered As2Se3-Based Chalcogenide Photonic Crystal Fibers

[摘要] Small core As2Se3-based photonic crystal fibers (PCFs) are accurately characterized for compact, high power, ultrabroadband, and coherent supercontinuum generation within few millimeters fiber length. Bandwidths of~5.3 μm, 5 μm, and 3.2 μm were calculated for hole-to-hole spacingsΛ=3.5 μm, 4.5 μm, and 5.5 μm, respectively. The spectral broadening in the chalcogenide PCF is mainly caused by self-phase modulation and Raman-induced soliton self-frequency shift. The results show that small core As2Se3PCFs are a promising candidate for mid-IR SCG up to~8 μm.

[学科分类] 光谱学