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White light supercontinuum generation in a Y-shaped microstructured tapered fiber pumped at 1064 nm
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White light supercontinuum generation in a Y-shaped microstructured tapered fiber pumped at 1064 nm
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| Cascante-Vindas, J.; Díez Cremades, Antonio; Cruz Muñoz, José Luis; Andrés, Miguel V. | |||
| Aquest document és un/a article, creat/da en: 2010 | |||
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| We report the generation of supercontinuum in a Ge-doped Y-shape tapered fiber pumped at 1064 nm in the ns pump regime. The taper was designed to have long taper transitions and a taper waist with a core diameter of 0.9 μm. The large air-filling fraction and diameter of the air-hole microstructure reduces the confinement loss at long wavelengths so, enabling the extension of the spectrum to longer wavelengths. Along the taper transition the zero-dispersion wavelength decreases as the diameter of the taper becomes smaller. The spectral components generated along the taper transition pump the taper waist, enhancing the generation of short wavelengths. A flat spectrum spanning from 420 nm to 1850 nm is reported. | |||
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