Dodge Optics Lab

Beyond Homes scaling: disorder, the Planckian bound and a new universality

Wed, 19 Feb 2025 00:00:00 +0000

THzTools: data analysis software for terahertz time-domain spectroscopy

Sat, 30 Nov 2024 00:00:00 +0000

Nonequilibrium spectroscopy

Tue, 26 Nov 2024 00:00:00 +0000

Statistical data analysis for THz-TDS

Tue, 26 Nov 2024 00:00:00 +0000

THzTools is an open source python package that we have developed for data analysis in time-domain spectroscopy. THz-TDS involves measurements of terahertz-frequency electromagnetic waveforms that are acquired as a function of time, which users typically represent as a function of frequency for analysis. THzTools makes it easier for researchers to use statistically optimal methods for doing this analysis, as described in L. Mohtashemi et al., Opt. Express 29, 4912 (2021). Find more information and documentation here

Terahertz time-domain spectroscopy

Tue, 26 Nov 2024 00:00:00 +0000

Terahertz time-domain spectroscopy is a data analysis technique used to analyze solid state systems. A typical measurement compares two waveforms, one of which has interacted with a material and another which has not.

In our lab, we use terahertz time-domain spectroscopy (THz-TDS) to analyze condensed matter in order to observe the behaviour of solid state systems when excited by waveforms. A typical measurement compares two waveforms, one of which has interacted with a material and another which has not. In our lab we use two waveforms to investigate the electromagnetic responses of various matter over the terahertz frequency range. The pulses are measured as a time function, and signal processing techniques are required in order to relate the time function to the frequency function of the electromagnetic pulses. The ThzTools Python package has tools to help with the methods of THz-TDS analysis. A paper discussing the usage of both THz-TDS and [THzTools is avaliable] below. Loaiza, J. P., Higuera-Quintero, S., Noori, A., Mohtashemi, L., Hall, R. P., Yimam, N. A., & Dodge, J. S. (2024, December 2). THzTools:Data Analysis Software for terahertz time-domain spectroscopy. Journal of Open Source Software.

Time-Resolved Magneto-Optical Effects in the Altermagnet Candidate MnTe

Wed, 20 Nov 2024 00:00:00 +0000

Nonlinear Photoconductivity in Pump-Probe Spectroscopy. I. Optical Coefficients

Mon, 28 Oct 2024 00:00:00 +0000

Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K$_{3}$C$_{60}$

Fri, 03 Mar 2023 00:00:00 +0000

Maximum-Likelihood Parameter Estimation in Terahertz Time-Domain Spectroscopy

Mon, 01 Feb 2021 00:00:00 +0000

Many-Body Recombination in Photoexcited Insulating Cuprates

Sun, 01 Dec 2019 00:00:00 +0000

Transient terahertz photoconductivity of insulating cuprates

Fri, 01 Sep 2017 00:00:00 +0000

Disorder and superfluid density in overdoped cuprate superconductors

Sat, 01 Jul 2017 00:00:00 +0000

Resonant magneto-optic Kerr effect in the magnetic topological insulator Cr:(Sb$_x$,Bi$_{1-x}$)$_2$Te$_3$

Tue, 01 Dec 2015 00:00:00 +0000

Terahertz time-domain spectroscopy of transient metallic and superconducting states

Thu, 01 Oct 2015 00:00:00 +0000

Continuous Referencing for Increasing Measurement Precision in Time-Domain Spectroscopy

Fri, 01 Feb 2013 00:00:00 +0000

Time-domain spectroscopy (TDS)-based method and system for obtaining coincident sheet material parameters

Tue, 01 May 2012 00:00:00 +0000

Structure, Physical Properties, and Applications of SrRuO$_3$ Thin Films

Thu, 01 Mar 2012 00:00:00 +0000

Photoexcited Carrier Relaxation Dynamics and Terahertz Response of Photoconductive Antennas Made on Proton Bombarded GaAs Materials

Wed, 01 Dec 2010 00:00:00 +0000

Simultaneous Composition and Thickness Measurement of Paper Using Terahertz Time-Domain Spectroscopy

Sun, 01 Nov 2009 00:00:00 +0000

Terahertz-Frequency Carrier Dynamics and Spectral Weight Redistribution in the Nearly Magnetic Metal CaRuO$_3$

Sun, 01 Oct 2006 00:00:00 +0000

Nonlinear optical signatures of the tensor order in Cd$_2$Re$_2$O$_7$

Fri, 01 Sep 2006 00:00:00 +0000

Determination of Electron-Phonon Interaction Parameters from Time-Domain Terahertz Spectroscopy

Sun, 01 Jan 2006 00:00:00 +0000

Linear and Nonlinear Optics of Sr$_2$CuO$_2$Cl$_2$

Fri, 01 Mar 2002 00:00:00 +0000

Parity-Forbidden Excitations of Sr$_2$CuO$_2$Cl$_2$ Revealed by Optical Third-Harmonic Spectroscopy

Wed, 01 Aug 2001 00:00:00 +0000

Evidence of Phonon-Mediated Coupling between Charge Transfer and Ligand Field Excitons in Sr$_2$CuO$_2$Cl$_2$

Tue, 01 May 2001 00:00:00 +0000

Low-Frequency Crossover of the Fractional Power-Law Conductivity in SrRuO$_3$

Fri, 01 Dec 2000 00:00:00 +0000

Klein et al. Reply:

Wed, 01 Mar 2000 00:00:00 +0000

Time-Resolved Optical Observation of Spin-Wave Dynamics

Mon, 01 Nov 1999 00:00:00 +0000

Temperature-Dependent Local Exchange Splitting in SrRuO$_3$

Wed, 01 Sep 1999 00:00:00 +0000

Lorentz Transmission Electron Microscope Study of Ferromagnetic Domain Walls in SrRuO$_3$: Statics, Dynamics, and Crystal Structure Correlation

Thu, 01 Apr 1999 00:00:00 +0000

Transport and Magnetization in the Badly Metallic Itinerant Ferromagnet

Fri, 01 Nov 1996 00:00:00 +0000

Anomalous Spin Scattering Effects in the Badly Metallic Itinerant Ferromagnet SrRuO$_3$

Sun, 01 Sep 1996 00:00:00 +0000

Symmetry of the Magneto-optic Response of the Sagnac Interferometer

Mon, 01 Apr 1996 00:00:00 +0000

Perpendicular Magnetic Anisotropy and Strong Magneto-optic Properties of SrRuO$_3$ Epitaxial Films

Mon, 01 May 1995 00:00:00 +0000

High-resolution Magneto-optic Measurements with a Sagnac Interferometer

Sun, 01 May 1994 00:00:00 +0000

Magneto-Optic Measurements with a Sagnac Interferometer

Sat, 01 Jan 1994 00:00:00 +0000

Measurement of the Spontaneous Polar Kerr Effect in YBa$_2$Cu$_3$O$_7$ and Bi$_2$Sr$_2$CaCu$_2$O$_8$

Mon, 01 Jun 1992 00:00:00 +0000

Test for Nonreciprocal Circular Birefringence in Bi$_2$Sr$_2$CaCu$_2$O$_8$

Sat, 01 Feb 1992 00:00:00 +0000

Mon, 01 Jan 0001 00:00:00 +0000