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Nanosecond pulse propagation in a high power iodine laser amplifier

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Abstract

Pulse propagation in a photochemical iodine laser amplifier is investigated both experimentally and by solving the Maxwell-Schrödinger equations by computer. Pulse shortening and pulse reshaping are observed in agreement with theory. For pulse durations approaching the dephasing time, it is found that a further decrease in duration by gain saturation is hard to obtain and requires high power levels or high initial inversion. The numerical analysis includes reservoir effects due to tightly coupled hyperfine levels in the iodine groundstate and phase modulation (chirping) of the input pulse. Comparison of the iodine parameters with those of Nd and CO2 lasers shows that for nanosecond pulses pulse shortening occurs more readily in the latter two systems in agreement with experiments.

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Author notes

  1. N. Skribanowitz

    Present address: Kristalloptik, 808 Fürstenfeldbruck, West Germany

Authors and Affiliations

  1. Physik Department E11, Technische Universität, München, West Germany

    N. Skribanowitz, B. Kopainsky & W. Kaiser

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  1. N. Skribanowitz
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  2. B. Kopainsky
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  3. W. Kaiser
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Skribanowitz, N., Kopainsky, B. & Kaiser, W. Nanosecond pulse propagation in a high power iodine laser amplifier. Opt Quant Electron 8, 219–229 (1976). https://doi.org/10.1007/BF00620203

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  • DOI: https://doi.org/10.1007/BF00620203

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