Abstract

Using experimental feedback, we demonstrate that a chirped-pulse amplifier can adaptively learn to compensate for the higher-order phase dispersion that is inherent in the amplification process. A genetic algorithm-based search routine is used to repetitively update the pulse phase in a programmable pulse stretcher during a plasma breakdown experiment to maximize the magnitude of spectral blueshift. Reductions in pulse duration from 37 to 30 fs and substantially better wing structure are typically obtained as a result of the optimization.

© 1998 Optical Society of America

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References

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1998 (2)

1997 (6)

1995 (2)

1992 (1)

R. S. Judson and H. Rabitz, Phys. Rev. Lett. 68, 1500 (1992).
[CrossRef] [PubMed]

1991 (1)

W. M. Wood, C. W. Siders, and M. C. Downer, Phys. Rev. Lett. 67, 3523 (1991); IEEE Trans. Plasma Sci. 21, 20 (1993).
[CrossRef] [PubMed]

Aoyama, M.

Backus, S.

Bardeen, C. J.

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

Barty, C. P. J.

Braun, A.

Carpenter, S. D.

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

Downer, M. C.

B. Rau, C. W. Siders, S. P. Le Blanc, D. L. Fisher, M. C. Downer, and T. Tajima, J. Opt. Soc. Am. B 14, 643 (1997).
[CrossRef]

W. M. Wood, C. W. Siders, and M. C. Downer, Phys. Rev. Lett. 67, 3523 (1991); IEEE Trans. Plasma Sci. 21, 20 (1993).
[CrossRef] [PubMed]

Dugan, M. A.

Durfee, C. G.

Efimov, A.

Fisher, D. L.

Fittinghoff, D.

Judson, R. S.

R. S. Judson and H. Rabitz, Phys. Rev. Lett. 68, 1500 (1992).
[CrossRef] [PubMed]

Kane, S.

Kapteyn, H. C.

Krausz, F.

Le Blanc, S. P.

Lenzner, M.

Matsuoka, S.

Meshulach, D.

Mourou, G.

Murnane, M. M.

Norris, T.

Rabitz, H.

R. S. Judson and H. Rabitz, Phys. Rev. Lett. 68, 1500 (1992).
[CrossRef] [PubMed]

Rau, B.

Reitze, D. H.

Schmidt, A. J.

Siders, C. W.

B. Rau, C. W. Siders, S. P. Le Blanc, D. L. Fisher, M. C. Downer, and T. Tajima, J. Opt. Soc. Am. B 14, 643 (1997).
[CrossRef]

W. M. Wood, C. W. Siders, and M. C. Downer, Phys. Rev. Lett. 67, 3523 (1991); IEEE Trans. Plasma Sci. 21, 20 (1993).
[CrossRef] [PubMed]

Silberberg, Y.

Spielmann, Ch.

Sullivan, A.

Tajima, T.

Takuma, H.

Tull, J. X.

Warren, W. S.

M. A. Dugan, J. X. Tull, and W. S. Warren, J. Opt. Soc. Am. B 14, 2348 (1997).
[CrossRef]

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

Weber, P. M.

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

White, W. E.

Wilson, K. R.

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

Wintner, E.

Wood, W. M.

W. M. Wood, C. W. Siders, and M. C. Downer, Phys. Rev. Lett. 67, 3523 (1991); IEEE Trans. Plasma Sci. 21, 20 (1993).
[CrossRef] [PubMed]

Yakovlev, V. V.

C. J. Bardeen, V. V. Yakovlev, K. R. Wilson, S. D. Carpenter, P. M. Weber, and W. S. Warren, Chem. Phys. Lett. 280, 151 (1997).
[CrossRef]

Yamakawa, K.

Yelin, D.

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Figures (4)

Fig. 1
Fig. 1

(a) Largest magnitude of blueshift (rectangles) and average evaluation per generation (triangles) and (b) evolution of cubic (circles) and NL (squares) phases versus generation.

Fig. 2
Fig. 2

Autocorrelations of the amplified pulse after (solid curve) and before (dashed curve) optimization. Inset, logarithmic plot of the autocorrelations, showing the difference in the wing structures of the optimized and the nonoptimized pulses.

Fig. 3
Fig. 3

(a) Largest magnitude of blueshift (rectangles) and average evaluation (circles). Evolution of (b) quadratic and quartic and (c) cubic and NL phases.

Fig. 4
Fig. 4

Measured spectra for three values of cubic phase during the plasma breakdown. The optimal cubic phase -20,000 fs3 corresponds to the largest blueshift.

Equations (1)

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Φω=12!d2Φdω2ω-ω02+13!d3Φdω3ω-ω03+14!d4Φdω4ω-ω04+ΦNLω-ω0.

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