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THz波连续波透射式逐点扫描快速成像实验研究

ISSN号：1005-0086
期刊名称：《光电子．激光》
时间：0
分类：O614.121[理学—无机化学;理学—化学] O441.4[理学—电磁学;理学—物理]
作者机构：the Institute of Laser & Opto-Electronic,College of Precision Instruments and Opto-Electronic Engineering,Tianjin University
相关基金：supported by the National Basic Research Program of China（973）under Grant No.2015CB755403 and No.2014CB339802; National High Technology Research and Development Program（863）under Grant No.2011AA010205; National Natural Science Foundation of China under Grant No.61107086;No.61172010;and No.61471257; Natural Science Foundation of Tianjin under Grant No.14JCQNJC02200; Science and Technology Support Program of Tianjin under Grant No.14ZCZDGX00030; Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20120032110053; CAEP THz Science and Technology Foundation under Grant No.CAEPTHZ201304

作者：李忠孝[1], 徐德刚[1], 王与烨[1], 李佳起[1], 闫超[1], 刘鹏翔[1], 姚建铨[1]

关键词：晶体结构, 太赫兹波, 非线性光学, 激光损伤阈值, 相位匹配条件, 增益介质, 技术合成, 合成方法, BaGa4Se7 Bridgman-Stockbarger mid-infrared nonlinear gain medium THz-DFG

中文摘要：

A newly grown Ba Ga4Se7 crystal has been synthesized via the Bridgman-Stockbarger technique.This new crystal has advantages of high nonlinear optics(NLO) coefficients,high laser damage thresholds,and wide transparent regions.The Ba Ga4Se7 crystal has bright application prospects as a nonlinear gain medium in mid-infrared and terahertz regions.In this paper,the crystalline structure and synthetic method of the Ba Ga4Se7 crystal are introduced.The refractive indices and absorption coefficients along three dielectric axes between 0.1 THz and 1.0 THz are also obtained.The terahertz difference frequency generation(THz-DFG) characteristics based on the BaG a4Se7 crystal in the frequency range of 0.1 THz to 1.0 THz are analyzed theoretically and the phase-matching conditions are calculated.The application of Ba Ga4Se7 crystals in terahertz wave generation is also discussed.

英文摘要：

A newly grown Ba Ga4Se7 crystal has been synthesized via the Bridgman-Stockbarger technique.This new crystal has advantages of high nonlinear optics（NLO） coefficients,high laser damage thresholds,and wide transparent regions.The Ba Ga4Se7 crystal has bright application prospects as a nonlinear gain medium in mid-infrared and terahertz regions.In this paper,the crystalline structure and synthetic method of the Ba Ga4Se7 crystal are introduced.The refractive indices and absorption coefficients along three dielectric axes between 0.1 THz and 1.0 THz are also obtained.The terahertz difference frequency generation（THz-DFG） characteristics based on the BaG a4Se7 crystal in the frequency range of 0.1 THz to 1.0 THz are analyzed theoretically and the phase-matching conditions are calculated.The application of Ba Ga4Se7 crystals in terahertz wave generation is also discussed.

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