Kolano, MichaelMichaelKolanoBoidol, OliverOliverBoidolWeber, StefanStefanWeberMolter, DanielDanielMolterFreymann, Georg vonGeorg vonFreymann2022-03-142022-03-142018https://publica.fraunhofer.de/handle/publica/40336810.1109/IRMMW-THz.2018.8509880We 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 an optical amplifier stage, we are able to measure transients with a spectral bandwidth of 2.5 THz and a dynamic range of 50 dB in a measurement time of 1s with a timing accuracy of the THz pulse of approximately 50 fs. Based on the novel laser architecture, we call this new approach single-laser polarization-controlled optical sampling, or SLAPCOPS.en003006519conference paper