title: Tuning the frequency of ultrashort laser pulses by a cross-phase-modulation-induced shift in a photonic crystal fiber.
abstract: Femtosecond pulses of fundamental Cr:forsterite laser radiation are used as a pump field to tune the frequency of copropagating second-harmonic pulses of the same laser through cross-phase modulation in a photonic crystal fiber. Sub-100-kW femtosecond pump pulses coupled into a photonic crystal fiber with an appropriate dispersion profile can shift the central frequency of the probe field by more than 100 nm, suggesting a convenient way to control propagation and spectral transformations of ultrashort laser pulses.
authors: Physics Department, International Laser Center, M. V. Lomonosov Moscow State University, Vorob'evy gory, Moscow 119899, Russia.
authors: S O
authors: SO
authors: Konorov
authors: D A
authors: DA
authors: Akimov
authors: A M
authors: AM
authors: Zheltikov
authors: A A
authors: AA
authors: Ivanov
authors: M V
authors: MV
authors: Alfimov
authors: M
authors: M
authors: Scalora