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A method to control the polarization of random terahertz lasing in two-dimensional disordered ruby medium

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
分类：TN25[电子电信—物理电子学] TM410.6[电气工程—电器]
作者机构：[1]Wuhan National Laboratory for Optoelectronics, School of Optoelectronlc Science and Engineering, Huazhong University of Science and Technology~ Wuhan 430074, China
相关基金：Project supported by the Fundamental Research Fund for the Central Universities of Ministry of Education of China （Grant No. 2010MS041）, the National Natural Science Foundation of China （Grant No. 60778003）, and the Science Foundation of China Academy of Engineering Physics NSAF （Grant No. 10876010）.

关键词：介质极化, 无序介质, 面积控制, 太赫兹, 红宝石, 随机, 三能级原子系统, 激射, disordered media, lightwave localization, random lasers

中文摘要：

Terahertz (THz) random lasing is studied numerically for two-dimensional disordered media made of ruby grains with a three-level atomic system.A method via the adjustment of the pumping area to control the polarization of the THz wave is proposed.Computed results reveal that transverse electric THz lasing modes could occur if pumping is supplied on the whole medium,while transverse magnetic THz lasing modes could occur if pumping is appropriately supplied on a partial area of the medium.

英文摘要：

Terahertz （THz） random lazing is studied numerically for two-dimensional disordered media made of ruby grains with a three-level atomic system. A method via the adjustment of the pumping area to control the polarization of the THz wave is proposed. Computed results reveal that transverse electric THz lasing modes could occur if pumping is supplied on the whole medium, while transverse magnetic THz lasing modes could occur if pumping is appropriately supplied on a partial area of the medium.

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