Two-frequency superradiance of pyrene impurity centers in diphenyl
С. Н. АндриановPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovP. V. Zinov’evPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovYu. V. MalyukinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovE. N. RudenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovВ. В. СамарцевPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovN. B. SilaevaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovYu. E. SheĭbutPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
Аннотация
Dicke superradiance (SR) on the purely electronic (1B2u→1Ag) and electronic-vibrational (1B2u→1Ag × ag) transitions of pyrene molecules in a diphenyl host was studied theoretically and experimentally. The conditions for the appearance of SR on an electronic–vibrational transition were determined. It is shown that SR pulses propagate in the crystal in the form of simulton. The lifetime of the vibrational excitations in this crystal is evaluated by Dicke’s SR method.
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