Ellrich Frank, Weinland Tristan, Molter Daniel, Jonuscheit Joachim, Beigang René
Department of Terahertz Measurement and Systems, Fraunhofer Institute for Physical Measurement Techniques, Erwin-Schroedinger-Street, Building 56, 67663 Kaiserslautern, Germany.
Rev Sci Instrum. 2011 May;82(5):053102. doi: 10.1063/1.3587070.
Photonic terahertz (THz) technology using femtosecond (fs) lasers has a great potential in a wide range of applications, such as non-destructive testing of objects or spectroscopic identification of chemical substances. For industrial purposes, a THz system has to be compact and easily implementable into the particular application. Therefore, fiber-coupled THz systems are the key to a widespread use of THz technology. In order to have flexible THz emitters and detectors near infrared fs light pulses have to be sent through optical fibers of considerable length. As a consequence, the fiber's dispersion has to be compensated for and nonlinear effects in the fiber have to be minimized. A fiber-based THz time-domain spectroscopy system of high stability, flexibility, and portability is presented here.
使用飞秒（fs）激光的光子太赫兹（THz）技术在广泛的应用中具有巨大潜力，例如物体的无损检测或化学物质的光谱识别。出于工业目的，太赫兹系统必须紧凑且易于在特定应用中实现。因此，光纤耦合太赫兹系统是太赫兹技术广泛应用的关键。为了在近红外飞秒光脉冲附近拥有灵活的太赫兹发射器和探测器，必须将其通过相当长的光纤发送。因此，必须补偿光纤的色散，并将光纤中的非线性效应降至最低。本文介绍了一种基于光纤的具有高稳定性、灵活性和便携性的太赫兹时域光谱系统。
