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asakereh B, amini S, golshan M M. Population of levels of a lambda-type three-level atom in left-handed materials . ICOP & ICPET _ INPC _ ICOFS 2015; 21 :1477-1480
URL: http://opsi.ir/article-1-675-en.html
URL: http://opsi.ir/article-1-675-en.html
1- Tehran university
2- shiraz university
2- shiraz university
Abstract: (2685 Views)
The main aim of the present work is to report the atomic populations for lambda-type three level atoms embedded in a left-handed material. To follow this aim, we use the quantization of electromagnetic field in such materials and advance the well known Markov approximation to the second order. From this second-order approximation we show that the population of the upper level is sinusoidal with a decreasing amplitude which eventually vanishes. As expected, the population of the lower two levels, although sinusoidal, have ascending amplitudes, approaching constant values. A comparison between this behavior and that in the right-handed materials is also given.
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