Abstract

We report efficient generation of tunable femtosecond pulses in the ultraviolet (UV) by intracavity doubling of a visible femtosecond optical parametric oscillator (OPO). The OPO, based on a 400μm BiB3O6 crystal and pumped at 415nm in the blue, can provide visible femtosecond signal pulses across 500710nm. Using a 500μm crystal of β-BaB2O4 internal to the OPO cavity, efficient frequency doubling of the signal pulses into the UV is achieved, providing tunable femtosecond pulses across 250355nm with up to 225mW of average power at 76MHz. Cross-correlation measurements result in UV pulses with durations down to132fs for 180fs blue pump pulses.

© 2008 Optical Society of America

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References

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  1. M. Ghotbi and M. Ebrahim-Zadeh, Opt. Express 12, 6002 (2004).
    [CrossRef] [PubMed]
  2. M. Ghotbi, M. Ebrahim-Zadeh, A. Majchrowski, E. Michalski, and I. V. Kityk, Opt. Lett. 29, 2530 (2004).
    [CrossRef] [PubMed]
  3. F. Rotermund and V. Petrov, Opt. Lett. 23, 1040 (1998).
    [CrossRef]
  4. M. Ghotbi, A. Esteban-Martin, and M. Ebrahim-Zadeh, Opt. Lett. 31, 3128 (2006).
    [CrossRef] [PubMed]
  5. V. P. Yanovsky and F. W. Wise, Opt. Lett. 19, 1952 (1994).
    [CrossRef] [PubMed]
  6. R. J. Ellingson and C. L. Tang, Opt. Lett. 18, 438 (1993).
    [CrossRef] [PubMed]
  7. G. M. Gale, M. Cavallari, T. J. Driscoll, and F. Hache, Opt. Lett. 20, 1562 (1995).
    [CrossRef] [PubMed]
  8. M. Ghotbi and M. Ebrahim-Zadeh, Opt. Lett. 30, 3395 (2005).
    [CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Configuration of the intracavity frequency-doubled visible BIBO femtosecond OPO synchronously pumped by the second harmonic of KLM Ti : sapphire laser in the blue. L 1 and L 3 , focusing lenses; L 2 and L 4 , collimating lenses.

Fig. 2
Fig. 2

Typical spectra of (a) the visible signal across the OPO tuning range and (b) the corresponding generated second harmonic in the UV.

Fig. 3
Fig. 3

Variation of the generated UV average power and conversion efficiency at 323 nm with the blue pump power at 415 nm .

Fig. 4
Fig. 4

Cross-correlation trace, and (inset) spectrum of the generated UV pulses at 323 nm . The time duration of Δ τ 132 fs and the spectral bandwidth of Δ ν 0.9 nm result in near-transform-limited pulses with a time–bandwidth product of Δ ν Δ τ 0.34 .

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