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Superradiating 4P-4S-3P cascade of sodium vapour arising on the leading edge of the exciting laser pulse

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Abstract

Investigations of the superradiating cascade of sodium vapour 4P-4S-3P λ 1 = 2.21 µm andλ 2=1.14 µm) arising on the leading edge of the exciting laser pulse were carried out. The dependences of the actual delay timeτ ′D of theλ 1 pulse on the population rise time of the laser-excited 4P state were measured and compared with those calculated following the existing theoretical model. The dependence of the actual delay timeτ ′D on the inverse density of excited atoms 1/N* is also presented. Analysis of this dependence revealed the influence of the Doppler dephasing and of the second,λ 2, transition on the formation of theλ 1 superradiance.

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  1. The Institute of Physics, Savanoriu Ave. 231, 2028, Vilnius, Lithuania

    Z. Kuprionis & V. Švedas

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  1. Z. Kuprionis
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  2. V. Švedas
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Kuprionis, Z., Švedas, V. Superradiating 4P-4S-3P cascade of sodium vapour arising on the leading edge of the exciting laser pulse. Appl. Phys. B 59, 649–653 (1994). https://doi.org/10.1007/BF01081188

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