Using a femtosecond Ti:sapphire laser operating at a wavelength of 810 nm we have demonstrated infrared generation in photonic crystal fibre at distinct wavelengths which can be attributed to the soliton self-frequency shift effect. The maximum observed shift produced spectra centred at 1260 nm and the frequency-shifted light accounted for up to 80% of the fibre output power. We show that the shifts can be explained by the dispersion properties of the fundamental and higher-order waveguide modes of the fibre.
|Number of pages||11|
|Journal||Journal of Modern Optics|
|Publication status||Published - 15 Apr 2002|
|Event||15th UK National Quantum Electronics and Photonics Conference - Glasgow, United Kingdom|
Duration: 3 Sep 2001 → 6 Sep 2001