Towards broadband terahertz generation due to coherent phonon-polariton excitations in centrosymmetric media

被引：4
|
作者：
Gaizauskas, Eugenijus [1 ]
Vaicaitis, Virgilijus [1 ]
Fedotova, Olga [2 ]
Khasanov, Oleg [2 ]
机构：
[1] Vilnius State Univ, Laser Res Ctr, LT-10222 Vilnius, Lithuania
[2] Sci & Pract Ctr Phys Sci & Technol, BY-02300 Minsk, BELARUS
来源：
OPTICAL MATERIALS EXPRESS | 2015年 / 5卷 / 03期
关键词：
ONE-PHOTON; RADIATION; PULSES;
D O I：
10.1364/OME.5.000623
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, four-wave difference-frequency generation in centrosymmetric media doped with three-level quantum systems is investigated theoretically. Terahertz radiation generation in the coherent regime of interaction, where the durations of optical pulses are shorter than the relaxation time of coherences induced in two-and one-photon resonant transitions, is analyzed. It is shown that the coherent regime of four-wave frequency mixing enhances the efficiency of radiation generation in the terahertz frequency range. Quantum confined systems (e.g., atoms and molecules in nanoparticles) should be considered as possible media for practical implementation of the method. (C) 2015 Optical Society of America
引用
收藏
页码：623 / 628
页数：6
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