Abstract

A simple phenomenological scaling behavior is found for the power dependence of the pulse width for negatively pre-chirped pulses propagating in a normally dispersive fiber; the consequences for maximizing nonlinear signals such as two-photon fluorescence excited at the fiber output are considered.

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References

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  1. S. Smith, N. C. R. Holme, B. Orr, R. Kopelman, and T. B. Norris, "Ultrafast measurement in GaAs thin films using NSOM," Ultramicroscopy 71, 213-223 (1998).
    [CrossRef]
  2. M. Lewis, P. Wolanin, A. Gafni, and D. Steel, "Near-field scanning optical microscopy of single molecules by femtosecond two-photon excitation," Opt. Lett. 23, 1111-1113 (1995).
    [CrossRef]
  3. A. Lago, A. T. Obeidat, A. E. Kaplan, J. B. Khurgin, P. L. Shkilnikov, and M. D. Stern, "Two-photon-induced fluorescence of biological markers based on optical fibers," Opt. Lett. 20, 2054-2056 (1995).
    [CrossRef] [PubMed]
  4. W. Denk, J. H. Strickler, and W. W. Webb, "Two-photon laser scanning fluorescence microscopy," Science 248, 73-76 (1990).
    [CrossRef] [PubMed]
  5. B. R. Washburn, J. A. Buck, and S. E. Ralph, "Transform-limited spectral compression due to self-phase modulation in fibers," Opt. Lett. 25, 445-447 (2000).
    [CrossRef]
  6. T. B. Norris, "Femtosecond pulse amplification at 250 kHz with a Ti:sapphire regenerative amplifier and application to continuum generation," Opt. Lett. 17, 1009-1011 (1992).
    [CrossRef] [PubMed]
  7. J.-K. Rhee, T. S. Sosnowski, T. B. Norris, J. A. Arns, and W. S. Colburn, "Chirped-pulse amplification of 85-fs pulses at 250 kHz with third-order dispersion compensation by use of holographic transmission gratings," Opt. Lett. 19, 1550-1552 (1994).
    [CrossRef] [PubMed]

Other (7)

S. Smith, N. C. R. Holme, B. Orr, R. Kopelman, and T. B. Norris, "Ultrafast measurement in GaAs thin films using NSOM," Ultramicroscopy 71, 213-223 (1998).
[CrossRef]

M. Lewis, P. Wolanin, A. Gafni, and D. Steel, "Near-field scanning optical microscopy of single molecules by femtosecond two-photon excitation," Opt. Lett. 23, 1111-1113 (1995).
[CrossRef]

A. Lago, A. T. Obeidat, A. E. Kaplan, J. B. Khurgin, P. L. Shkilnikov, and M. D. Stern, "Two-photon-induced fluorescence of biological markers based on optical fibers," Opt. Lett. 20, 2054-2056 (1995).
[CrossRef] [PubMed]

W. Denk, J. H. Strickler, and W. W. Webb, "Two-photon laser scanning fluorescence microscopy," Science 248, 73-76 (1990).
[CrossRef] [PubMed]

B. R. Washburn, J. A. Buck, and S. E. Ralph, "Transform-limited spectral compression due to self-phase modulation in fibers," Opt. Lett. 25, 445-447 (2000).
[CrossRef]

T. B. Norris, "Femtosecond pulse amplification at 250 kHz with a Ti:sapphire regenerative amplifier and application to continuum generation," Opt. Lett. 17, 1009-1011 (1992).
[CrossRef] [PubMed]

J.-K. Rhee, T. S. Sosnowski, T. B. Norris, J. A. Arns, and W. S. Colburn, "Chirped-pulse amplification of 85-fs pulses at 250 kHz with third-order dispersion compensation by use of holographic transmission gratings," Opt. Lett. 19, 1550-1552 (1994).
[CrossRef] [PubMed]

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Figures (4)

Fig 1.
Fig 1.

(a) Autocorrelation width and (b) power spectra of output pulses from the fiber with energies of 0.16 nJ (solid line) and 0.4 nJ (dotted line)

Fig 2.
Fig 2.

(a) Autocorrelation and (b) spectrum of an output pulse with an energy of 8 nJ, illustrating the effects of pulse break up

Fig 3.
Fig 3.

Pump power (energy) dependence of (a) autocorrelation width and (b) TPF signal amplitude

Fig 4.
Fig 4.

Repetition rate dependence of TPF signal amplitude at fixed average powers of (a) 0.3 mW and (b) 0.9 mW

Equations (1)

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U fl U p 2 τ po + β U p α

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