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2018
Journal Article
Titel
Single-laser polarization-controlled optical sampling system for THz-TDS
Abstract
We demonstrate a polarization-multiplexed, single-laser system for terahertz (THz) time-domain spectroscopy without an external delay line. The fiber laser emits two pulse trains with independently adjustable repetition rates, utilizing only one laser-active section and one pump diode. With a standard fiber-coupled THz setup and a polarization-multiplexed optical amplifier, we are able to measure transients with a spectral bandwidth of 1.5 THz and a dynamic range of 50 dB in a measurement time of 1 s. Based on the novel laser architecture, we call this new approach single-laser polarization-controlled optical sampling, or SLAPCOPS.
Author(s)
Kolano, M.
Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany and Fraunhofer Institute for Industrial Mathematics ITWM, Center for Materials Characterization and Testing, 67663 Kaiserslautern, Germany
Gräf, B.
Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany and Fraunhofer Institute for Industrial Mathematics ITWM, Center for Materials Characterization and Testing, 67663 Kaiserslautern, Germany
Weber, S.
Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany and Fraunhofer Institute for Industrial Mathematics ITWM, Center for Materials Characterization and Testing, 67663 Kaiserslautern, Germany