Superradiating 4P-4S-3P cascade of sodium vapour arising on the leading edge of the exciting laser pulse |
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Authors: | Z Kuprionis V ?vedas |
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Institution: | (1) The Institute of Physics, Savanoriu Ave. 231, 2028 Vilnius, Lithuania |
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Abstract: | Investigations of the superradiating cascade of sodium vapour 4P-4S-3P
1 = 2.21 µm and
2=1.14 µm) arising on the leading edge of the exciting laser pulse were carried out. The dependences of the actual delay time
D
of the
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 time
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,
2, transition on the formation of the
1 superradiance. |
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Keywords: | 32 50 + d 42 50 + q |
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