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Octave wide tunable UV-pumped NOPA : pulses down to 20 fs at 0.5 MHzrepetition rate

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2008

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Homann, Christian
Schriever, Christian
Riedle, Eberhard

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https://doi.org/10.1364/OE.16.005746
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Optics Express. Optical Society of America (OSA). 2008, 16(8), pp. 5746-5756. eISSN 1094-4087. Available under: doi: 10.1364/OE.16.005746

Zusammenfassung

Femtosecond laser pulses, which are tunable from 440 to 990 nm, are generated at MHz repetition rates by noncollinear parametric amplification (NOPA). The pulses have durations of 20 to 30 fs over the major part of the tuning range and a high energy stability of 1.3% (rms). The NOPA is pumped with ultraviolet pulses from the third harmonic of an ytterbium doped fiber laser system and seeded by a smooth continuum generated in bulk sapphire. The residual second harmonic is used to pump an additional NOPA, which is independently tunable from 620 to 990 nm. Interference experiments show that the two NOPA systems have a precisely locked relative phase, despite of being pumped by different harmonics with a random phase jitter. This demonstrates that the phase of pulses generated by optical parametric amplification does not depend on the pump phase.

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ISO 690HOMANN, Christian, Christian SCHRIEVER, Peter BAUM, Eberhard RIEDLE, 2008. Octave wide tunable UV-pumped NOPA : pulses down to 20 fs at 0.5 MHzrepetition rate. In: Optics Express. Optical Society of America (OSA). 2008, 16(8), pp. 5746-5756. eISSN 1094-4087. Available under: doi: 10.1364/OE.16.005746
BibTex
@article{Homann2008Octav-51920,
  year={2008},
  doi={10.1364/OE.16.005746},
  title={Octave wide tunable UV-pumped NOPA : pulses down to 20 fs at 0.5 MHzrepetition rate},
  number={8},
  volume={16},
  journal={Optics Express},
  pages={5746--5756},
  author={Homann, Christian and Schriever, Christian and Baum, Peter and Riedle, Eberhard}
}
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    <dcterms:abstract xml:lang="eng">Femtosecond laser pulses, which are tunable from 440 to 990 nm, are generated at MHz repetition rates by noncollinear parametric amplification (NOPA). The pulses have durations of 20 to 30 fs over the major part of the tuning range and a high energy stability of 1.3% (rms). The NOPA is pumped with ultraviolet pulses from the third harmonic of an ytterbium doped fiber laser system and seeded by a smooth continuum generated in bulk sapphire. The residual second harmonic is used to pump an additional NOPA, which is independently tunable from 620 to 990 nm. Interference experiments show that the two NOPA systems have a precisely locked relative phase, despite of being pumped by different harmonics with a random phase jitter. This demonstrates that the phase of pulses generated by optical parametric amplification does not depend on the pump phase.</dcterms:abstract>
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