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OptSp

Steady-state one- and two-frequency 2 P 1/2 - 2 P 3/2 emission of atomic iodine in a magnetic field

O. P. Sklyarov

Published Dec 1, 1982• 0 citations
OpenAlex

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Laser Physics•Jan 11, 2013•3 citations
An investigation was made of the characteristics of stimulated emission of short light pulses in a transverse magnetic field. Conditions for simultaneous emission at two frequencies corresponding to the F'=3F=4 and F'=2→F=2 transitions. In magnetic fields of 0–800 Oe intensity the frequencies of the σ Zeeman components of the above 3–4 and 2–2 transitions coincided with the central frequencies of the corresponding transitions in the luminescence spectrum of atomic iodine in the absence of a magnetic field.
We study the control of spontaneous emission in a three-level V-type atom that is coupled by a static magnetic field in photonic crystals. We find that by changing the position of the upper band edge and Larmor frequency of the magnetic field, control of the steady-state behavior of spontaneous emission can be achieved. As the transition frequencies move from outside the band gap to inside, the structure of the spectral line changes from a two-peak structure to a single-peak structure, and then to a non-Lorentzian shape. With the increase of the Larmor frequency of the magnetic field, when both transition frequencies are outside the photonic band gap, the partial spectral line disappears; however, when both frequencies are inside the band gap, the non-Lorentzian shape is replaced by a Lorentzian shape. These phenomena arise from the fact that the corresponding transition frequency is pushed into or out of the band gap.