4 papers
Light-Matter-Coupling formalism for magnons: probing quantum geometry with light
Ying Shing Liu, Emil Viñas Boström, Michael A. Sentef +1
Nontrivial quantum geometry is a key feature of the wavefunctions of collective magnetic excitations in topological systems, but accessing it experimentally remains an open challen…
Broadband THz spectroscopy system beyond 25 THz using BNA crystals and a tunable single-ring-fiber compressor
Wei Cui, Aswin Vishnuradhan, Markus Lippl +4
We present a terahertz time-domain spectroscopy (THz-TDS) system which accesses a broadband spectrum, efficiently covering the so-called "new THz gap" between 5 and 15 THz and exte…
Detection of Moving Targets using Coherent Optical Frequency Domain Reflectometry
Esther Renner, Max Koeppel, Bernhard Schmauss
We present Doppler-corrected position and velocity measurement with a fiber-coupled COFDR system based on the FMCW radar principle for high precision localization applications. A h…
Position Measurement of Multiple Microparticles in Hollow-Core Photonic Crystal Fiber by Coherent Optical Frequency Domain Reflectometry
Jasper Podschus, Max Koeppel, Bernhard Schmauss +4
Flying particle sensors in hollow-core photonic crystal fibers require accurate localization of the optically trapped microparticles. We report position measurement to micrometer-r…