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Phase-matched four-wave mixing of isolated waveguide modes of high-intensity femtosecond pulses in a hollow photonic-crystal fiber |
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| Authors: | S O Konorov E E Serebryannikov A A Ivanov D A Akimov M V Alfimov A M Zheltikov |
| Institution: | (1) Physical Department, Moscow State University, Vorob’evy gory, Moscow, 119899, Russia;(2) Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow, 117421, Russia;(3) International Laser Center, Moscow State University, Vorob’evy gory, Moscow, 119899, Russia |
| Abstract: | Hollow-core photonic-crystal fibers with a special dispersion profile are shown to allow phase-matched nonlinear optical interactions of isolated air-guided modes of high-intensity femtosecond laser pulses confined in the hollow fiber core. We present theoretical and experimental studies of the four-wave mixing of fundamental and second-harmonic pulses of a Cr:forsterite laser with an initial pulse duration of about 50 fs and an intensity on the order of 1014 W/cm2 in waveguide modes of a hollow photonic-crystal fiber with a core diameter of about 13μm. |
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