Chirped-pulse supercontinuum generation with a long-cavity Ti:sapphire oscillator
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- Dombi, P., Antal, P., Fekete, J. et al. Appl. Phys. B (2007) 88: 379. doi:10.1007/s00340-007-2742-3
We demonstrate chirped-pulse supercontinuum generation in a conventional fibre with a relatively narrowband, long-cavity, chirped-pulse Ti:sapphire oscillator delivering 200 nJ pulses. The inherent chirp of the outcoupled pulses were overcompensated by a 4-prism compressor to overcome damage threshold problems at the fibre entrance. The resulting fibre output spectrum corresponds to a pulse length of 7 fs in the transform-limit. The experimentally observed highly efficient spectral broadening process of negatively chirped pulses in the fibre is supported by simulation data.