Abstract

A novel method based on a birefringent crystal is presented to compensate for the group-velocity mismatch between a femtosecond pulsed pump and the signal or idler in an optical parametric generator (OPG). With a thin calcite plate inserted between two β-barium borate crystals for synchronization, an efficient four-pass OPG pumped by a frequency-doubled ∼200-fs Ti:sapphire laser is obtained. The conversion efficiency is almost doubled throughout the whole tunable region compared with a conventional OPG pumped at the same power density, indicating that the total conversion efficiency of femtosecond optical parametric amplifier system can be raised significantly by use of this new four-pass OPG to generate the seed.

© 2001 Optical Society of America

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References

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  1. W. Joosen, P. Agostini, G. Petite, J. P. Chambaret, A. Antonetti, “Broadband femtosecond infrared parametric amplification in beta-BaB2O4,” Opt. Lett. 17, 133–135 (1992).
    [CrossRef] [PubMed]
  2. M. Nisoli, S. De Silvestri, V. Magni, O. Svaranavicious, R. Danielius, A. Piskarskas, G. Valiulis, A. Varanavius, “Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz,” Opt. Lett. 19, 1973–1975 (1994).
    [CrossRef] [PubMed]
  3. R. Danielius, A. Piskarskas, P. Di Trapani, A. Andreoni, C. Solcia, P. Foggi, “Visible pulses of 100 fs and 100 µJ from an upconverted parametric generator,” Appl. Opt. 35, 5336–5339 (1996).
    [CrossRef] [PubMed]
  4. J. Y. Zhang, Z. Y. Xu, Y. F. Kong, C. W. Yu, Y. C. Wu, “Highly efficient, widely tunable, 10-Hz parametric amplifier pumped by frequency-doubled femtosecond Ti:sapphire laser pulses,” Appl. Opt. 37, 3299–3305 (1998).
    [CrossRef]
  5. V. Krylov, A. Kalintsev, A. Rebane, D. Erni, U. P. Wild, “Noncollinear parametric generation in LiIO3 and β-barium borate by frequency-doubled femtosecond Ti:sapphire laser pulses,” Opt. Lett. 20, 151–153 (1995).
    [CrossRef] [PubMed]
  6. T. Wilhelm, J. Piel, E. Riedle, “Sub-20-fs pulses tunable across the visible from a blue-pumped single-pass noncollinear parametric converter,” Opt. Lett. 22, 1494–1496 (1997).
    [CrossRef]
  7. G. Cerullo, M. Nisoli, S. Stagira, S. De Silvestri, “Sub-8-fs pulses from an ultrabroadband optical parametric amplifier in the visible,” Opt. Lett. 23, 1283–1285 (1998).
    [CrossRef]
  8. A. Shirakawa, I. Sakane, T. Kobayashi, “Pulse-front-matched optical parametric amplification for sub-10-fs pulse generation tunable in the visible and near infrared,” Opt. Lett. 23, 1292–1294 (1998).
    [CrossRef]
  9. R. Danielius, A. Piskarskas, P. Di Trapani, A. Andreoni, C. Solcia, P. Foggi, “Matching of group velocities by spatial walk-off in collinear three-wave interaction with tilted pulses,” Opt. Lett. 21, 973–975 (1996).
    [CrossRef] [PubMed]
  10. K. S. Wong, Z. R. Qui, H. Wang, G. K. L. Wong, “Efficient visible femtosecond optical parametric generator and amplifier using tilted pulse-front pumping,” Opt. Lett. 22, 898–900 (1997).
    [CrossRef] [PubMed]
  11. 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]
  12. T. S. Sosnowski, P. B. Stephens, T. B. Norris, “Production of 30-fs pulses tunable throughout the visible spectral region by a new technique in optical parametric amplification,” Opt. Lett. 21, 140–142 (1996).
    [CrossRef] [PubMed]
  13. 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]
  14. M. Nisoli, S. Stagira, S. De Silvestri, O. Svelto, G. Valiulis, A. Varanavicius, “Parametric generation of high-energy 14.5-fs light pulses at 1.5 µm,” Opt. Lett. 23, 630–632 (1998).
    [CrossRef]
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    [CrossRef] [PubMed]

1998 (4)

1997 (2)

1996 (3)

1995 (3)

1994 (1)

1992 (1)

1987 (1)

Agostini, P.

Andreoni, A.

Antonetti, A.

Burn, A.

Cerullo, G.

Chambaret, J. P.

Danielius, R.

De Silvestri, S.

Di Trapani, P.

Dubietis, A.

Erni, D.

Foggi, P.

Georges, P.

Greenfield, S. R.

Joosen, W.

Kalintsev, A.

Kobayashi, T.

Kong, Y. F.

Krylov, V.

Magni, V.

Nisoli, M.

Norris, T. B.

Petite, G.

Piel, J.

Piskarskas, A.

Qui, Z. R.

Rebane, A.

Riedle, E.

Roger, G.

Sakane, I.

Salin, F.

Shirakawa, A.

Solcia, C.

Sosnowski, T. S.

Stagira, S.

Stephens, P. B.

Svaranavicious, O.

Svelto, O.

Valiulis, G.

Varanavicius, A.

Varanavius, A.

Wang, H.

Wasielewski, M. R.

Wild, U. P.

Wilhelm, T.

Wong, G. K. L.

Wong, K. S.

Wu, Y. C.

Xu, Z. Y.

Yu, C. W.

Zhang, J. Y.

Appl. Opt. (3)

J. Opt. Soc. Am. B (1)

Opt. Lett. (11)

V. Krylov, A. Kalintsev, A. Rebane, D. Erni, U. P. Wild, “Noncollinear parametric generation in LiIO3 and β-barium borate by frequency-doubled femtosecond Ti:sapphire laser pulses,” Opt. Lett. 20, 151–153 (1995).
[CrossRef] [PubMed]

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]

K. S. Wong, Z. R. Qui, H. Wang, G. K. L. Wong, “Efficient visible femtosecond optical parametric generator and amplifier using tilted pulse-front pumping,” Opt. Lett. 22, 898–900 (1997).
[CrossRef] [PubMed]

T. Wilhelm, J. Piel, E. Riedle, “Sub-20-fs pulses tunable across the visible from a blue-pumped single-pass noncollinear parametric converter,” Opt. Lett. 22, 1494–1496 (1997).
[CrossRef]

M. Nisoli, S. Stagira, S. De Silvestri, O. Svelto, G. Valiulis, A. Varanavicius, “Parametric generation of high-energy 14.5-fs light pulses at 1.5 µm,” Opt. Lett. 23, 630–632 (1998).
[CrossRef]

G. Cerullo, M. Nisoli, S. Stagira, S. De Silvestri, “Sub-8-fs pulses from an ultrabroadband optical parametric amplifier in the visible,” Opt. Lett. 23, 1283–1285 (1998).
[CrossRef]

A. Shirakawa, I. Sakane, T. Kobayashi, “Pulse-front-matched optical parametric amplification for sub-10-fs pulse generation tunable in the visible and near infrared,” Opt. Lett. 23, 1292–1294 (1998).
[CrossRef]

T. S. Sosnowski, P. B. Stephens, T. B. Norris, “Production of 30-fs pulses tunable throughout the visible spectral region by a new technique in optical parametric amplification,” Opt. Lett. 21, 140–142 (1996).
[CrossRef] [PubMed]

R. Danielius, A. Piskarskas, P. Di Trapani, A. Andreoni, C. Solcia, P. Foggi, “Matching of group velocities by spatial walk-off in collinear three-wave interaction with tilted pulses,” Opt. Lett. 21, 973–975 (1996).
[CrossRef] [PubMed]

W. Joosen, P. Agostini, G. Petite, J. P. Chambaret, A. Antonetti, “Broadband femtosecond infrared parametric amplification in beta-BaB2O4,” Opt. Lett. 17, 133–135 (1992).
[CrossRef] [PubMed]

M. Nisoli, S. De Silvestri, V. Magni, O. Svaranavicious, R. Danielius, A. Piskarskas, G. Valiulis, A. Varanavius, “Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz,” Opt. Lett. 19, 1973–1975 (1994).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

GVM versus idler wavelength in [Δ1(λ), solid curve] type I phase-matched BBO and [Δ2(λ), dashed curve] calcite for a 400-nm pump polarized along the fast axis and the idler polarized along the slow axis.

Fig. 2
Fig. 2

Scheme of the OPG with the CC: DM1, DM2, dichroic mirrors; GM, gold mirror; M, delay-line mirror.

Fig. 3
Fig. 3

Average output pulse energy of the signal (left) and idler (right) as a function of wavelength: ■, with compensator; ○, without compensator. The inset shows the total parametric output energy of the femtosecond OPG as a function of signal wavelength.

Fig. 4
Fig. 4

Single-shot autocorrelation traces of the 800-nm pump pulse and 1-µm idler pulses with and without a CC.

Equations (4)

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1νλ=nλc1-λnλddλ nλ,
1νeθ, λ=nθ, λc1-λnθ, λddλ nθ, λ,
1/n2θ, λ=cos2θ/no2λ+sin2θ/ne2λ,
Δ1λ=1/νoλ-1/νeθ, λp,

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