Abstract

We propose and demonstrate a new approach, to the best of our knowledge, for avoiding nonlinear effects in the amplification of ultrashort optical pulses. The initial pulse is divided longitudinally into a sequence of lower-energy pulses that are otherwise identical to the original, except for the polarization. The low-intensity pulses are amplified and then recombined to create a final intense pulse. This divided-pulse amplification complements techniques based on dispersion management.

© 2007 Optical Society of America

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References

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  1. D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
    [CrossRef]
  2. M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
    [CrossRef] [PubMed]
  3. G. L. Eesley, Coherent Raman Spectroscopy (Pergamon, 1981).
  4. H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).
  5. H. E. Bates, J. Opt. Soc. Am. 69, 1474 (1980).

2000

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

1985

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

1980

H. E. Bates, J. Opt. Soc. Am. 69, 1474 (1980).

1979

H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).

Alfano, R. R.

H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).

Bates, H. E.

H. E. Bates, J. Opt. Soc. Am. 69, 1474 (1980).

H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).

Dudley, J. M.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Eesley, G. L.

G. L. Eesley, Coherent Raman Spectroscopy (Pergamon, 1981).

Fermann, M. E.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Harvey, J. D.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Kruglov, V. I.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Mourou, G.

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

Schiller, N.

H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).

Strickland, D.

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

Thomsen, B. C.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Appl. Phys. Lett.

H. E. Bates, R. R. Alfano, and N. Schiller, Appl. Phys. Lett. 18, 947 (1979).

J. Opt. Soc. Am.

H. E. Bates, J. Opt. Soc. Am. 69, 1474 (1980).

Opt. Commun.

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

Phys. Rev. Lett.

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey, Phys. Rev. Lett. 84, 6010 (2000).
[CrossRef] [PubMed]

Other

G. L. Eesley, Coherent Raman Spectroscopy (Pergamon, 1981).

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Figures (4)

Fig. 1
Fig. 1

DPA principle. The original pulse is divided into N copies of itself; the N pulses are amplified, and then recombined coherently to produce the final intense pulse. The light and dark colors of the pulses refer to the two perpendicular polarizations. The optical axes of neighbor crystals are rotated 45 ° about the direction of propagation, and the two colors indicate the two orientations. The final output pulse polarization is perpendicular to the input one.

Fig. 2
Fig. 2

Schematic of the experiment. PBS: polarization beam splitter, DIVIDER: birefringent crystal stack for pulse division, AMP, fiber amplifier; FR, 45 ° Faraday rotator. A grating compressor is placed after the amplifier and PBS for femtosecond-pulse operation.

Fig. 3
Fig. 3

Picosecond DPA results. a, initial pulse spectrum; b, initial pulse autocorrelation; c and d, amplified spectrum and autocorrelation without DPA, respectively; e and f, amplified spectrum and autocorrelation with DPA, respectively. Pulse durations inferred from autocorrelation measurements are indicated.

Fig. 4
Fig. 4

Femtosecond DPA results. a, initial pulse spectrum; b, initial pulse autocorrelation; c and d, amplified spectrum and autocorrelation without DPA, respectively; e and f, amplified spectrum and autocorrelation with DPA, respectively. Pulse durations inferred from autocorrelation measurements are indicated.

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