Abstract

We demonstrate numerically that simultaneous second-harmonic generation and moderate group-velocity mismatch can lead to spontaneous nonlinear shortening during parametric amplification. As an experimental proof we present the results of twofold self-compression of signal pulses in a β-barium borate parametric amplifier pumped by either 40- or 80-fs pulses from a Ti:sapphire laser.

© 1998 Optical Society of America

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References

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  1. A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
    [CrossRef]
  2. E. Ibragimov and A. Struthers, J. Opt. Soc. Am. B 14, 1472 (1997).
    [CrossRef]
  3. A. Dubietis, G. Valiulis, G. Tamosauskas, R. Danielus, and A. Piskarskas, Opt. Lett. 22, 1071 (1997).
    [CrossRef] [PubMed]
  4. M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
    [CrossRef]
  5. K. R. Wilson and V. V. Yakovlev, J. Opt. Soc. Am. B 14, 444 (1997).
    [CrossRef]
  6. G. M. Gale, M. Cavallari, T. J. Driscoll, and F. Hache, Opt. Lett. 20, 1562 (1995).
    [CrossRef] [PubMed]
  7. C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.
  8. R. DeSalvo, D. J. Hagan, M. Sheik-Bahae, G. Stegeman, and E. W. Van Stryland, Opt. Lett. 17, 28 (1992).
    [CrossRef] [PubMed]
  9. F. Hache, A. Zéboulon, G. Gallot, and G. M. Gale, Opt. Lett. 20, 1556 (1995).
    [CrossRef] [PubMed]
  10. G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, Calif., 1989), pp. 173–179.

1997 (3)

1996 (1)

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

1995 (2)

1992 (1)

1991 (1)

A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
[CrossRef]

Agrawal, G. P.

G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, Calif., 1989), pp. 173–179.

Bagnoud, V.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Barty, C.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Baubeau, E.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Cavallari, M.

Chambaret, J.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Danielus, R.

De Silvestri, S.

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

DeSalvo, R.

Dorrer, C.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Driscoll, T. J.

Dubietis, A.

Gale, G. M.

Gallot, G.

Hache, F.

Hagan, D. J.

Ibragimov, E.

Ibragimov, E. A.

A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
[CrossRef]

Le Blanc, C.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Nisoli, M.

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

Piskarskas, A.

Salin, F.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Sheik-Bahae, M.

Squier, J.

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

Stabinis, A.

A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
[CrossRef]

Stegeman, G.

Struthers, A.

Tamosauskas, G.

Valiulis, G.

A. Dubietis, G. Valiulis, G. Tamosauskas, R. Danielus, and A. Piskarskas, Opt. Lett. 22, 1071 (1997).
[CrossRef] [PubMed]

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
[CrossRef]

Van Stryland, E. W.

Varanavicius, A.

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

Wilson, K. R.

Yakovlev, V. V.

Zéboulon, A.

Appl. Phys. Lett. (1)

M. Nisoli, S. De Silvestri, G. Valiulis, and A. Varanavicius, Appl. Phys. Lett. 68, 3540 (1996).
[CrossRef]

J. Opt. Soc. Am. B (2)

Opt. Commun. (1)

A. Stabinis, G. Valiulis, and E. A. Ibragimov, Opt. Commun. 86, 301 (1991).
[CrossRef]

Opt. Lett. (4)

Other (2)

C. Le Blanc, V. Bagnoud, C. Dorrer, E. Baubeau, J. Chambaret, F. Salin, J. Squier, and C. Barty, presented at the Ultrafast Optics Conference, Monterey, California, August 4–7, 1997.

G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, Calif., 1989), pp. 173–179.

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Figures (3)

Fig. 1
Fig. 1

(a) GVM as a function of wavelength in a type I 800-nm pumped BBO parametric amplifier. SH, second harmonic. (b) Phase-matching curves for type I 800-nm pumped OPA and type I second-harmonic generation (SHG) in BBO. The horizontal axis corresponds to the fundamental wave in the case of SHG.

Fig. 2
Fig. 2

Output pulses from the 40-fs laser-pumped OPA, computed with the five-wave model. The 1200-nm signal has a 24-fs pulse width, a similar result is obtained with a three-wave model, for which n2eff=-1.5 n2 (dotted curve). The dashed curve shows the 33-fs signal wave obtained when we neglect the cascaded nonlinearities.

Fig. 3
Fig. 3

(a) Autocorrelation function of the 1200-nm signal pulse obtained with the 40-fs pump laser. The fit corresponds to a 20-fs hyperbolic secant pulse. (b) Autocorrelation function of the 1200-nm signal pulse obtained with the 80-fs pump laser. The fit corresponds to a 42-fs hyperbolic secant pulse.

Equations (5)

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A1z+1v1-1v3A1t+ik122A1t2+α12A1=iω1cn1 cos2ρ1χeff, 1232A3A2* exp-iΔk123l+χeff, 1152A5A1* exp-iΔk115l+i3ω12cn1χstat3i=15κliAi2A1;
A2z+1v2-1v3A2t+ik222A2t2+α22A2=iω2cn2 cos2ρ2χeff, 1232A3A1* exp-iΔk123l+χeff, 2242A4A2* exp-iΔk224l+i3ω22cn2χstat3i=15κ2iAi2A2, 
A3z+ik322A3t2+α32A3=iω3cn3 cos2ρ3χeff, 1232A1A2 expΔk123l+i3ω32cn3χstat3i=15κ3iAi2A3, 
A4z+1v4-1v3A4t+ik422A4t2+α42A4=iω4cn4 cos2ρ4χeff, 2242A22 expiΔk224l+i3ω42cn4χstat3i=15κ4iAi2A4, 
A5z+1v5-1v3A5t+ik522A5t2+α52A5=iω5cn5 cos2ρ5χeff, 1152A12 expiΔk115l+i3ω52cn5χstat3i=15κ5iAi2A5.

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