Abstract

We report the use of an integrated-optics wave-front measurement sensor to measure with 200-nsec temporal resolution the phase and intensity at the aperture of a high-power (3.5-MW peak power) flash-lamp-pumped pulsed dye laser. The measurements reveal large fluctuations of the dye-laser wave front during the 2-μsec duration of the laser pulse. The fluctuations and the resulting poor beam quality are attributed to inhomogeneous heating of the dye during the pulse. These high-temporal-resolution measurements, which are not possible with other state-of-the-art wave-front analyzers, explain the previously measured poor beam quality of the laser.

© 1989 Optical Society of America

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References

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  1. B. G. Zollars, P. N. Everett, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 297.
  2. P. N. Everett, B. G. Zollars, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 291.
  3. R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
    [CrossRef]
  4. Y. T. Chan, in Proceedings of Conference on Charge-Coupled Device Technology and Applications (National Aeronautics and Space Administration, Washington, D.C., 1976), p. 89.

1988

R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
[CrossRef]

Burke, B. E.

R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
[CrossRef]

Chan, Y. T.

Y. T. Chan, in Proceedings of Conference on Charge-Coupled Device Technology and Applications (National Aeronautics and Space Administration, Washington, D.C., 1976), p. 89.

Everett, P. N.

B. G. Zollars, P. N. Everett, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 297.

P. N. Everett, B. G. Zollars, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 291.

Lind, T. A.

R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
[CrossRef]

Rediker, R. H.

R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
[CrossRef]

Zollars, B. G.

B. G. Zollars, P. N. Everett, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 297.

P. N. Everett, B. G. Zollars, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 291.

IEEE J. Lightwave Technol.

R. H. Rediker, T. A. Lind, B. E. Burke, IEEE J. Lightwave Technol. LT-6, 916 (1988).
[CrossRef]

Other

Y. T. Chan, in Proceedings of Conference on Charge-Coupled Device Technology and Applications (National Aeronautics and Space Administration, Washington, D.C., 1976), p. 89.

B. G. Zollars, P. N. Everett, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 297.

P. N. Everett, B. G. Zollars, in Proceedings of the International Conference on Lasers ’87 (Society of Optical and Quantum Electronics, McLean, Va., 1988), p. 291.

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Figures (5)

Fig. 1
Fig. 1

Diagram of the IOWMS illustrating the interferometer array coupled into the CCD imager. The interferometer array has 20 interferometer outputs and 21 straight outputs. The CCD has a memory in which to store consecutive frames of data.

Fig. 2
Fig. 2

Measured far-field intensity distribution of the dye laser. The beam is approximately 15 times its diffraction limit.

Fig. 3
Fig. 3

Experimental arrangement.

Fig. 4
Fig. 4

Near-field wave front at the output aperture of the dye laser. (a) The temporally and spatially resolved phase. Ten measurements along a radial slice of the beam were made during the 2-μsec laser pulse. The change in the output phase with time is attributed to heating of the dye medium. Each point plotted is the average value over the 200-nsec temporal resolution and the 0.22-mm spatial resolution. (Results are shown for the central 18-resolution elements of the IOWMS. The intensity of the radiation near the boundaries was too low to obtain statistically meaningful data.) (b) The temporally resolved spatial average of the intensity.

Fig. 5
Fig. 5

Far-field intensity distribution calculated from the measured near-field phase and intensity. Note the good agreement between this distribution and the measured far-field distribution of Fig. 2.

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