Abstract

Regenerative pulse shaping is used to alleviate gain narrowing during ultrashort-pulse amplification. Amplification bandwidths of ~100 nm, or nearly three times wider than the traditional gain-narrowing limit, are produced with a modified Ti:sapphire regenerative amplifier. This novel regenerative amplifier has been used to amplify pulses to the 5-mJ level with a bandwidth sufficient to support ~10-fs pulses.

© 1996 Optical Society of America

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References

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1994

K. Yamakawa, P. H. Chui, A. Magana, J. D. Kmetec, IEEE J. Quantum Electron. 30, 2698 (1994).
[CrossRef]

C. P. J. Barty, C. L. Gordon, B. E. Lemoff, Opt. Lett. 19, 1442 (1994).
[CrossRef] [PubMed]

1993

1991

1985

D. Strickland, G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

Asaki, M. T.

Barty, C. P. J.

Becker, P. C.

Brabec, T.

Chui, P. H.

K. Yamakawa, P. H. Chui, A. Magana, J. D. Kmetec, IEEE J. Quantum Electron. 30, 2698 (1994).
[CrossRef]

Combs, R. L.

Curley, P. F.

de Barros, M. R. X.

Garvey, D.

Gordon, C. L.

Huang, C.-P.

Kapteyn, H. C.

Kmetec, J. D.

K. Yamakawa, P. H. Chui, A. Magana, J. D. Kmetec, IEEE J. Quantum Electron. 30, 2698 (1994).
[CrossRef]

J. D. Kmetec, J. J. Macklin, J. F. Young, Opt. Lett. 16, 1001 (1991).
[CrossRef] [PubMed]

Krausz, F.

Lemoff, B. E.

Lenzner, M.

Macklin, J. J.

Magana, A.

K. Yamakawa, P. H. Chui, A. Magana, J. D. Kmetec, IEEE J. Quantum Electron. 30, 2698 (1994).
[CrossRef]

Mourou, G.

D. Strickland, G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

Murnane, M. M.

Patterson, F. G.

Perry, M. D.

Price, D. F.

Schmidt, A. J.

Shepherd, R. L.

Spielmann, C.

Strickland, D.

D. Strickland, G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

White, W. E.

Wintner, E.

Yamakawa, K.

K. Yamakawa, P. H. Chui, A. Magana, J. D. Kmetec, IEEE J. Quantum Electron. 30, 2698 (1994).
[CrossRef]

Young, J. F.

Zhou, J.

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Figures (4)

Fig. 1
Fig. 1

Schematic of a half-wave regenerative amplifier with various spectral filters. Pol1, Pol2, thin-film polarizers; M1, −20-m mirror; M2, +10-m mirror; P1, P2, Brewster prisms.

Fig. 2
Fig. 2

Bottom plot: ASE spectra from the free-running amplifier without a filter (dotted curve, 33 nm FWHM), with a 5-μm étalon (dashed curve, 45 nm FWHM), and with a 3-μm étalon (solid curve, 84 nm FWHM). Top plot: representative single-pass transmission curves for a 3-μm (solid curve) and a 5-μm (dashed curve) nitrocellulose étalon oriented to be antiresonant at ~790 nm (angles of incidence 5.6 and 11.5 deg, respectively).

Fig. 3
Fig. 3

ASE spectra from the free-running amplifier with prisms inside (dotted curve, 28 nm FWHM) and for different spatial masking (solid curve, 76 nm FWHM; dashed curve, 60 nm FWHM) for comparable energy output.

Fig. 4
Fig. 4

Spectra for amplified pulses with no intracavity filter (dashed curve, 32-nm FWHM) and with the pulse shaper consisting of two 3-μm étalons (solid curve, 98 nm FWHM). The output energy is 5 mJ in both cases. The spectrum of the oscillator is also shown (dotted curve, 83 nm FWHM) before stretching and after the expander (dotted–dashed curve, 65 nm FWHM).

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