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Highly nonlinear photonic-crystal fibers for the spectral transformation of Cr: forsterite laser pulses |
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| Authors: | AB Fedotov EE Serebryannikov DA Sidorov-Biryukov AV Shcherbakov MV Alfimov |
| Institution: | a Physics Department, Faculty of Physics, M.V. Lomonosov Moscow State University, Vorob’evy gory, Moscow 119992, Russian Federation b International Laser Center, M.V. Lomonosov Moscow State University, Vorob’evy gory, Moscow 119992, Russian Federation c Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow 117421, Russian Federation d N.G. Chernyshevsky Saratov State University, ul. Moskovskaya 155, 410026 Saratov, Russian Federation e Institute of Glass Structure Technology and Equipment, pr. Stroitelei 1, 410044 Saratov, Russian Federation f National Taiwan University, Institute of Electro-Optical Engineering, Taipei 10617, Taiwan |
| Abstract: | We demonstrate novel photonic-crystal fibers (PCFs) fabricated of a highly nonlinear glass. Dispersion profiles and nonlinearity of these fibers are tailored with an array of submicron holes in the fiber core. With the PCF structure designed to provide a nonlinearity on the order of 103 W−1 km−1 at the radiation wavelength of 1 μm and a fundamental-mode dispersion profile with zero group-velocity dispersion around 1.19 μm, unamplified femtosecond Cr: forsterite laser pulses are efficiently frequency-converted into the 540-1000-nm wavelength range through solitonic spectral-transformation mechanisms and four-wave mixing. |
| Keywords: | 42 81 Gs 42 81 Qb |
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