Abstract

A simple method for measuring the coherence time of ultrashort pulses is reported. The double reflection off a glass slide produces interference fringes that are used to calculate the coherence time.

© 1992 Optical Society of America

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References

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  1. J. A. Armstrong, “Measurement of picosecond laser pulse widths,” Appl. Phys. Lett. 10, 16–18 (1967).
    [CrossRef]
  2. M. A. Duguay, J. W. Hansen, “Optical sampling of subnanosecond light pulses,” Appl. Phys. Lett. 13, 178–180 (1968).
    [CrossRef]
  3. W. H. Knox, N. M. Pearson, K. D. Li, C. A. Hirlimann, “Interferometric measurements of femtosecond group delay in optical components,” Opt. Lett. 13, 574–576 (1988).
    [CrossRef] [PubMed]
  4. M. Beck, I. A. Walmsley, “Measurement of group delay with high temporal and spectral resolution,” Opt. Lett. 15, 492–494 (1990).
    [CrossRef] [PubMed]
  5. D. L. MacFarlane, L. W. Casperson, A. A. Tovar, “Spectral behavior and pulse train instabilities of a synchronously pumped mode-locked dye laser,” J. Opt. Soc. Am. B 5, 1144–1151 (1988).
    [CrossRef]

1990

1988

1968

M. A. Duguay, J. W. Hansen, “Optical sampling of subnanosecond light pulses,” Appl. Phys. Lett. 13, 178–180 (1968).
[CrossRef]

1967

J. A. Armstrong, “Measurement of picosecond laser pulse widths,” Appl. Phys. Lett. 10, 16–18 (1967).
[CrossRef]

Armstrong, J. A.

J. A. Armstrong, “Measurement of picosecond laser pulse widths,” Appl. Phys. Lett. 10, 16–18 (1967).
[CrossRef]

Beck, M.

Casperson, L. W.

Duguay, M. A.

M. A. Duguay, J. W. Hansen, “Optical sampling of subnanosecond light pulses,” Appl. Phys. Lett. 13, 178–180 (1968).
[CrossRef]

Hansen, J. W.

M. A. Duguay, J. W. Hansen, “Optical sampling of subnanosecond light pulses,” Appl. Phys. Lett. 13, 178–180 (1968).
[CrossRef]

Hirlimann, C. A.

Knox, W. H.

Li, K. D.

MacFarlane, D. L.

Pearson, N. M.

Tovar, A. A.

Walmsley, I. A.

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Figures (3)

Fig. 1
Fig. 1

Interferometer setup with the CCD detection system; MS, mean-square.

Fig. 2
Fig. 2

Coherence time (left axis), output power (solid curve on the right axis), and dark fringe intensity (dotted curve) as a function of detuning.

Fig. 3
Fig. 3

Simplified setup for one point measurement.

Tables (1)

Tables Icon

Table 1 Measurement of the Coherence Time for Different Slide Thicknesses

Equations (3)

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Δ t = 2 n d c ,
C = 2 I d I b + I d ,
δ t = 4 ln 2 n d c [ - ln ( 1 - C ) ] - 1 / 2 ,

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