Fiber-coupled Antennas for Ultrafast Coherent Terahertz Spectroscopy in Low Temperatures and High Magnetic Fields
S. A. Crooker
Abstract
For the purposes of measuring the high-frequency complex conductivity of correlated-electron materials at low temperatures and high magnetic fields, a method is introduced for performing coherent time-domain terahertz spectroscopy directly in the cryogenic bore of existing dc and pulsed magnets. Miniature fiber-coupled THz emitters and receivers are constructed and are demonstrated to work down to 1.5 Kelvin and up to 17 Tesla, for eventual use in higher-field magnets. Maintaining the sub-micron alignment between fiber and antenna during thermal cycling, obtaining ultrafast (<200~fs) optical gating pulses at the end of long optical fibers, and designing highly efficient devices that work well with low-power optical gating pulses constitute the major technical challenges of this project. Data on a YBCO superconducting thin film and a high mobility 2D electron gas is shown.
Create a lesson
Related papers
Hydrogen Electron Cyclotron Resonance Dissociator Demonstrator for the Project 8 Experiment
Manjinder Oueslati, Walter Pettus, Anna Reine et al.
On the Electrodynamics of a Non-Contact Inductive Sensor for High-Accuracy Tip Deflection Measurements of Piezoceramic Bending Actuators and its Application for Energy Harvesting Purposes
Ruediger G. Ballas
Fast Self-Triggering and Segment-Fitting of Cosmic Muons with a small-Diameter Monitored Drift Tube Detector
Shuzhe Li, Yuxiang Guo, Jiajin Ge et al.
A combined segmented anode gas ionization chamber and time-of-flight detector for heavy ion elastic recoil detection analysis
Petter Ström, Per Petersson, Marek Rubel et al.
Track reconstruction with ACTAR TPC: a transfer-reaction use case
M. Lozano-González, J. Lois-Fuentes, T. Roger et al.
Cryogenic performance of Silicon Photo-Multipliers at LN2 temperature and at 3 K in the RES-NOVA cryostat
Riccardo Rossini, Massimo Rossella, Massimiliano Clemenza et al.