Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 1998

Идентификатор DOI: 10.1070/QE1998v028n07ABEH001291

Аннотация: An investigation is reported of resonant four-wave frequency mixing of the type omega(4) = omega(1) - omega(2) + omega(3) under coherent population trapping conditions. Such mixing may appear when radiations of frequencies omega(1,2) are strong and when omega(1) - omega(2) = omega(20) (omega(20) is the frequency of a dipole-forbidden transition). The density matrix method is used to calculate (taking quantum interference into account) the absorption coefficients, the refractive indices, and the nonlinear susceptibilities exactly for the strong fields and in the first order of perturbation theory for the weak fields. A study is made of the dependence of the power of nonlinear optical generation on various characteristics of the transitions and of the radiation, subject to the propagation effects. The cases of homogeneous and Doppler broadening of the resonant transitions are considered. The characteristics of transitions in the barium atom are used in numerical illustrations. It is shown that the efficiency of resonant nonlinear-optical conversion of radiation can be enhanced by utilising interference processes in quantum transitions, which represent coherent population trapping.

Журнал: QUANTUM ELECTRONICS

Выпуск журнала: Vol. 28, Is. 7

Номера страниц: 637-642

ISSN журнала: 10637818

Место издания: LETCHWORTH

Издатель: TURPION LTD

• Arkhipkin V.G. (L V Kirensky Institute of Physics,Akademgorodok)
• Manushkin D.V. (Krasnoyarsk Stt. Tech. University)
• Myslivets S.A. (Krasnoyarsk State University)
• Popov A.K. (L V Kirensky Institute of Physics,Akademgorodok)

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