Abstract

We show that cascading of the second-order processes under large group-velocity mismatch can lead to the efficient compression of pulses at fundamental frequency in the type II phase-matched second-harmonic-generation process. We demonstrate that any of three interacting pulses can be compressed if the proper ratio of intensities of the o- and e-polarized pump pulses is chosen on input. We experimentally achieved compression of o-polarized pulses from 1.3 ps down to 280 fs with energy conversion close to 50% when a conventional second-harmonic compressor with unbalanced intensities of the pump pulses was used.

© 1996 Optical Society of America

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References

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1996

1995

1994

1993

P. Heinz, A. Laubereau, A. Dubietis, A. Piskarskas, Lith. J. Phys. 33, 314 (1993).

1992

1991

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

1990

Assanto, G.

Bakker, H. J.

Barthelemy, A.

Danielius, R.

DeSalvo, R.

DeSilvestri, S.

A. Varanavičius, G. Valiulis, M. Nisoli, S. DeSilvestri, presented at the IX International Symposium on Ultrafast Processes in Spectroscopy, Trieste, Italy, October 30–November 3, 1995.

Diels, J.-C.

Dubietis, A.

Hagan, D. J.

Heinz, P.

P. Heinz, A. Laubereau, A. Dubietis, A. Piskarskas, Lith. J. Phys. 33, 314 (1993).

Ibragimov, E. A.

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

Jacob, J.

Kuipers, L.

Lagendijk, A.

Laubereau, A.

P. Heinz, A. Laubereau, A. Dubietis, A. Piskarskas, Lith. J. Phys. 33, 314 (1993).

Lefort, L.

Luther-Davies, B.

Nisoli, M.

A. Varanavičius, G. Valiulis, M. Nisoli, S. DeSilvestri, presented at the IX International Symposium on Ultrafast Processes in Spectroscopy, Trieste, Italy, October 30–November 3, 1995.

Piskarskas, A.

Planken, P. C. M.

Sheik-Bahae, M.

Stabinis, A.

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

Stegeman, G.

Umbrasas, A.

Valiulis, G.

R. Danielius, A. Dubietis, A. Piskarskas, G. Valiulis, A. Varanavičius, Opt. Lett. 21, 216 (1996).
[CrossRef] [PubMed]

R. Danielius, A. Dubietis, G. Valiulis, A. Piskarskas, Opt. Lett. 20, 2225 (1995).
[CrossRef] [PubMed]

A. Umbrasas, J.-C. Diels, J. Jacob, G. Valiulis, A. Piskarskas, Opt. Lett. 20, 2228 (1995).
[CrossRef] [PubMed]

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

A. Varanavičius, G. Valiulis, M. Nisoli, S. DeSilvestri, presented at the IX International Symposium on Ultrafast Processes in Spectroscopy, Trieste, Italy, October 30–November 3, 1995.

Van Stryland, E. W.

Vanherzeele, H.

Varanavicius, A.

R. Danielius, A. Dubietis, A. Piskarskas, G. Valiulis, A. Varanavičius, Opt. Lett. 21, 216 (1996).
[CrossRef] [PubMed]

A. Varanavičius, G. Valiulis, M. Nisoli, S. DeSilvestri, presented at the IX International Symposium on Ultrafast Processes in Spectroscopy, Trieste, Italy, October 30–November 3, 1995.

Wang, Y.

Wang, Z.

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Figures (4)

Fig. 1
Fig. 1

Dynamics of the general phase at the top of the SH pulse: (a) pump intensities Io and Ie are optimized for most efficient SH pulse compression; (b) unbalanced pump intensities result in compression of the o-polarized pump pulse.

Fig. 2
Fig. 2

All-pulse compressor performance. The curves depict the intensity conversion rate of the o fundamental, the SH pulse, and the e fundamental.

Fig. 3
Fig. 3

Duration of the o fundamental at compressor output versus the intensity ratio of the pump pulses, Ie/Io. The overall pump intensity was kept constant at Ie + Io = 12 GW/cm2.

Fig. 4
Fig. 4

Typical autocorrelation traces of the o pulse. The numbers by the arrows indicate the FWHM of the autocorrelation.

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

A 1 z + 1 u 1 A 1 t i 2 g 1 2 A 1 t 2 = σ 1 A 2 * A 3 , A 2 z + 1 u 2 A 2 t i 2 g 2 2 A 2 t 2 = σ 2 A 1 * A 3 , A 3 z + 1 u 3 A 3 t i 2 g 3 2 A 3 t 2 = σ 3 A 1 A 2 ,
Φ z = Γ sin Φ , Γ = σ 3 a 1 a 2 a 3 σ 2 a 3 a 1 a 2 σ 1 a 3 a 2 a 1 .
δ Φ / z = Γ δ Φ .
Γ = σ ( 2 a 1 a 2 a 3 a 3 a 1 a 2 ) .

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