title: Compact fiber-coupled terahertz spectroscopy system pumped at 800 nm wavelength.
abstract: 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.
authors.affiliation: Department of Terahertz Measurement and Systems, Fraunhofer Institute for Physical Measurement Techniques, Erwin-Schroedinger-Street, Building 56, 67663 Kaiserslautern, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Ellrich
authors.forename: Tristan
authors.initials: T
authors.lastname: Weinland
authors.forename: Daniel
authors.initials: D
authors.lastname: Molter
authors.forename: Joachim
authors.initials: J
authors.lastname: Jonuscheit
authors.forename: René
authors.initials: R
authors.lastname: Beigang