Abstract

We demonstrate optical parametric generation and amplification of femtosecond pulses in the entire visible range using type-I phase-matched β-barium borate and lithium triborate crystals pumped by the frequency-doubled output of a Ti:sapphire regenerative amplifier at 395 nm. The output is tunable from 470 to 770 nm with a pulse width of ∼170 fs at a repetition rate of 1 kHz and a maximum output energy of ∼1.1 µJ/pulse. The visible optical parametric amplifier output was then frequency doubled and sum frequency mixed with the fundamental output of Ti:sapphire at 790 nm to produce UV pulses with a conversion efficiency of greater than 25%. The second harmonic generated UV pulses are tunable from 240 to 380 nm with a maximum pulse energy of ∼260 nJ/pulse.

© 1997 Optical Society of America

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References

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  1. See special issues on OPA and OPG in J. Opt. Soc. Am. B 10, No. 9 and No. 11 (1993); J. Opt. Soc. Am. B 12, No. 11 (1995).
  2. J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.
  3. M. K. Reed, M. S. Armas, M. K. Steiner-Shepard, D. K. Negus, “30-fs pulses tunable across the visible with a 100-kHz Ti:sapphire regenerative amplifier,” Opt. Lett. 20, 605–607 (1995).
    [CrossRef] [PubMed]
  4. S. R. Greenfield, M. R. Wasielewski, “Near-transform-limited visible and near-IR femtosecond pulses from optical parametric amplification using Type II β-barium borate,” Opt. Lett. 20, 1394–1396 (1995).
    [CrossRef] [PubMed]
  5. S. R. Greenfield, M. R. Wasielewski, “Optical parametric amplification of femtosecond pulses tunable from the blue to the infrared with microjoule energies,” Appl. Opt. 34, 2688–2691 (1995).
    [CrossRef] [PubMed]
  6. P. Di Trapani, A. Andreoni, C. Solcia, P. Foggi, R. Danielius, A. Dubietis, A. Piskarskas, “Matching of group velocities in three-wave parametric interaction with femtosecond pulses and application to traveling-wave generators,” J. Opt. Soc. Am. B 12, 2237–2244 (1995).
    [CrossRef]
  7. V. Petrov, F. Seifert, F. Noack, “Visible optical parametric generator producing nearly bandwidth-limited femtosecond light pulses at 1-kHz repetition rate,” Appl. Opt. 33, 6988–6991 (1994).
    [CrossRef] [PubMed]
  8. D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
    [CrossRef]
  9. K. Kato, “Tunable UV generation to 0.2325 µm in LiB3O5,” IEEE J. Quantum Electron. 26, 1173–1175 (1990).
    [CrossRef]
  10. R. L. Byer, R. L. Herbst, “Parametric oscillation and mixing,” in Nonlinear Infrared Generation, Y. R. Shen, ed. (Springer-Verlag, New York, 1977), pp. 81–137.
    [CrossRef]
  11. V. Krylov, A. Kalintsev, A. Rebane, D. Erni, U. P. Wild, “Nonlinear parametric generation in LiIO3 and β-barium borate by frequency-doubled femtosecond Ti:sapphire laser pulses,” Opt. Lett. 20, 151–153 (1995).
    [CrossRef] [PubMed]

1995

1994

1993

See special issues on OPA and OPG in J. Opt. Soc. Am. B 10, No. 9 and No. 11 (1993); J. Opt. Soc. Am. B 12, No. 11 (1995).

1990

K. Kato, “Tunable UV generation to 0.2325 µm in LiB3O5,” IEEE J. Quantum Electron. 26, 1173–1175 (1990).
[CrossRef]

1987

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Andreoni, A.

Armas, M. S.

Brun, A.

J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.

Byer, R. L.

R. L. Byer, R. L. Herbst, “Parametric oscillation and mixing,” in Nonlinear Infrared Generation, Y. R. Shen, ed. (Springer-Verlag, New York, 1977), pp. 81–137.
[CrossRef]

Danielius, R.

Davis, L.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Di Trapani, P.

Dubietis, A.

Eimerl, D.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Erni, D.

Foggi, P.

Georges, P.

J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.

Graham, E. K.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Greenfield, S. R.

Herbst, R. L.

R. L. Byer, R. L. Herbst, “Parametric oscillation and mixing,” in Nonlinear Infrared Generation, Y. R. Shen, ed. (Springer-Verlag, New York, 1977), pp. 81–137.
[CrossRef]

Kalintsev, A.

Kato, K.

K. Kato, “Tunable UV generation to 0.2325 µm in LiB3O5,” IEEE J. Quantum Electron. 26, 1173–1175 (1990).
[CrossRef]

Krylov, V.

Lipine, T.

J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.

Negus, D. K.

Noack, F.

Petrov, V.

Piskarskas, A.

Rebane, A.

Reed, M. K.

Seifert, F.

Solcia, C.

Steiner-Shepard, M. K.

Velsko, S.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Wasielewski, M. R.

Watson, J.

J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.

Wild, U. P.

Zalkin, A.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

Appl. Opt.

IEEE J. Quantum Electron.

K. Kato, “Tunable UV generation to 0.2325 µm in LiB3O5,” IEEE J. Quantum Electron. 26, 1173–1175 (1990).
[CrossRef]

J. Appl. Phys.

D. Eimerl, L. Davis, S. Velsko, E. K. Graham, A. Zalkin, “Optical, mechanical and thermal properties of barium borate,” J. Appl. Phys. 62, 1968–1983 (1987).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Other

J. Watson, T. Lipine, P. Georges, A. Brun, “Tunable femtosecond pulse in the visible by optical parametric amplification;” F. Salin, F. Estable, and F. Saviot, “Tunable femtosecond sourcesand optical parametric generators,” in Ultrafast Phenomena IX, P. F. Barbara, W. H. Knox, G. A. Gourou, A. H. Zewail, eds. (Springer-Verlag, Berlin, 1994), pp. 178 and 194.

R. L. Byer, R. L. Herbst, “Parametric oscillation and mixing,” in Nonlinear Infrared Generation, Y. R. Shen, ed. (Springer-Verlag, New York, 1977), pp. 81–137.
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Schematic layout of the OPG–OPA: BS1, BS2, beam splitters; DM1–3, dichroic beam splitters; M1–6, UV high reflecting mirrors; M7–9, visible high reflecting mirrors; C1, C2, nonlinear crystals (BBO or LBO); F, color glass filter.

Fig. 2
Fig. 2

Angular tuning curve for type-I phase matching as a function of wavelength for the OPG–OPA signal output: open circles, experimental data points for the BBO OPG–OPA; solid curve, theoretical results; open squares, experimental data points for the LBO OPG–OPA; dotted curve, theoretical results.

Fig. 3
Fig. 3

(a) Bandwidth of the signal beam as a function of wavelength for the BBO OPG–OPA: solid curve, calculated theoretical results using Eq. (1). (b) The autocorrelation curves at various signal wavelengths. The autocorrelation curve at λ = 475 nm is fitted with a Gaussian function (dotted curve) having a pulse width (τ) of 156 fs. All the reported τ’s were calculated by assuming a Gaussian pulse shape.

Fig. 4
Fig. 4

Measured pulse energy as a function of wavelength: open circles, the signal output (ω s) for the BBO OPG–OPA using 50 µJ/pulse of UV pumping energy; open squares, the signal output for the LBO OPG–OPA using 100 µJ/pulse of UV pumping energy; filled circles, the measured second-harmonic output pulse energy of the BBO OPG–OPA signal (2ω s); filled squares, the measured pulse energy for sum frequency mixing between the signal pulse ω s and the 790-nm pump beam (ω s + 790 nm).

Equations (2)

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Δν=0.53c1/vs-1/vig/L  for vsvi,
g=deff2ωsωiΦεonsninpc31/2,

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