Lattice Dynamics
Research Group Alexander Paarmann
Lattice Dynamics
Research Group Alexander Paarmann
Lattice Dynamics
Research Group Alexander Paarmann

Publications
2020
R. Kießling
Optical Sum-Frequency Response of Lattice Vibrations and Pulse Timing at a Free-Electron Laser
N.C. Passler, M. Jeannin, and A. Paarmann
Layer-Resolved Absorption of Light in Arbitrarily Anisotropic Heterostructures
Nikolai Christian Passler, Andreas Heßler, Matthias Wuttig, Thomas Taubner, Alexander Paarmann
Surface Polariton-Like s-Polarized Waveguide Modes in Switchable Dielectric Thin-Films on Polar Crystals
2019
N.C. Passler, A. Paarmann
Generalized 4 × 4 matrix formalism for light propagation in anisotropic stratified media: study of surface phonon polaritons in polar dielectric heterostructures: erratum
Riko Kiessling, Yujin Tong, Alexander J. Giles, Sandy Gewinner, Wieland Schoellkopf, Joshua D. Caldwell, Martin Wolf, Alexander Paarmann
Surface phonon polariton resonance imaging using long-wave infrared-visible sum-frequency generation microscopy
D. M. Juraschek, A. Paarmann; T. Kampfrath; S. F. Maehrlein
The THz sum-frequency counterparts of stimulated Raman scattering
Daniel C. Ratchford,* Christopher J. Winta,* Ioannis Chatzakis, Chase T. Ellis, Nikolai C. Passler, Jonathan Winterstein, Pratibha Dev, Ilya Razdolski, Joseph R. Matson, Joshua R Nolen, Joseph G. Tischler, Igor Vurgaftman, Michael B. Katz, Neeraj Nepal, Matthew T. Hardy, Jordan A. Hachtel, Juan Carlos Idrobo, Thomas L. Reinecke, Alexander J. Giles, D. Scott Katzer, Nabil D. Bassim, Rhonda M. Stroud, Martin Wolf, Alexander Paarmann, Joshua D. Caldwell
Controlling the Infrared Dielectric Function through Atomic-Scale Heterostructures
Nikolai Christian Passler, Ilya Razdolski, D. Scott Katzer, David F. Storm, Joshua D. Caldwell, Martin Wolf, Alexander Paarmann
Second Harmonic Generation from Phononic Epsilon-Near-Zero Berreman Modes in Ultrathin Polar Crystal Films
C.J. Winta, M. Wolf, and A. Paarmann
Low-temperature infrared dielectric function of hyperbolic α-quartz
2018
K. Pufahl, N.C. Passler, N.B. Grosse, M. Wolf, U. Woggon, and A. Paarmann
Controlling nanoscale air-gaps for critically coupled surface polaritons by means of non-invasive white-light interferometry
I. Razdolski, N.C. Passler, C.R. Gubbin, C.J. Winta, R. Cernansky, F. Martini, A. Politi, S.A. Maier, M. Wolf, A. Paarmann, and S. De Liberato
Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes
N.C. Passler, I. Razdolski, S. Gewinner, W. Schöllkopf, S. De Liberato, C. Gubbin, J. Caldwell, M. Wolf, A. Paarmann
Nonlinear Response and Strong Coupling of Surface Phonon Polaritons
R. Kiessling, W.B. Colson, S. Gewinner, W. Schöllkopf, M. Wolf, A. Paarmann
Femtosecond single-shot timing and direct observation of subpulse formation in an infrared free-electron laser
M. Porer, M. Fechner, E.M. Bothschafter, L. Rettig, M. Savoini, V. Esposito, J. Rittmann, M. Kubli, M.J. Neugebauer, E. Abreu, T. Kubacka, T. Huber, G. Lantz, S. Parchenko, S. Grübel, A. Paarmann, J. Noack, P. Beaud, G. Ingold, U. Aschauer, S.L. Johnson, and U. Staub
Ultrafast Relaxation Dynamics of the Antiferrodistortive Phase in Ca Doped SrTiO3
S.F. Maehrlein, I. Radu, P. Maldonado, A. Paarmann, M. Gensch, A.M. Kalashnikova, R.V. Pisarev, M. Wolf, P.M. Oppeneer, J. Barker, and T. Kampfrath
Dissecting spin-phonon equilibration in ferrimagnetic insulators by ultrafast lattice excitation
N.C. Passler, C.R. Gubbin, T.G. Folland, I. Razdolski, D.S. Katzer, D.F. Storm, M. Wolf, S. De Liberato, J.D. Caldwell, and A. Paarmann
Strong Coupling of Epsilon-Near-Zero Phonon Polaritons in Polar Dielectric Heterostructures
C.J. Winta, S. Gewinner, W. Schöllkopf, M. Wolf, A. Paarmann
Second-harmonic phonon spectroscopy of α-quartz
R. Kiessling, S. Gewinner, A. Paarmann, W. Schöllkopf, M. Wolf
Synchronized Mid-Infrared Pulses at the Fritz Haber Institute IR-FEL
2017
N.C. Passler, A. Paarmann
Generalized 4 × 4 matrix formalism for light propagation in anisotropic stratified media: study of surface phonon polaritons in polar dielectric heterostructures
N.C. Passler, I. Razdolski, S. Gewinner, W. Schöllkopf, M. Wolf, and A. Paarmann
Second-Harmonic Generation from Critically Coupled Surface Phonon Polaritons
2016
A. Paarmann, I. Razdolski, S. Gewinner, W. Schöllkopf, and M. Wolf
Effects of crystal anisotropy on optical phonon resonances in midinfrared second harmonic response of SiC
I. Razdolski, Y. Chen, A.J. Giles, S. Gewinner, W. Schöllkopf, M. Hong, M. Wolf, V. Giannini, J.D. Caldwell, S.A. Maier, and A. Paarmann
Resonant Enhancement of Second-Harmonic Generation in the Mid-Infrared Using Localized Surface Phonon Polaritons in Subdiffractional Nanostructures
A. Paarmann, I. Razdolski, J. Caldwell, A. Giles, V. Giannini, S. Gewinner, W. Schoellkopf, S. Maier, and M. Wolf
Mid-Infrared Second Harmonic Spectroscopy Probing Surface Phonon Polariton Localization in SiC Nanopillars
C.J. Winta, S. Gewinner, W. Schoellkopf, M. Wolf, and A. Paarmann
Second Harmonic Phonon Spectroscopy of α-Quartz
2015
A. Paarmann, I. Razdolski, A. Melnikov, S. Gewinner, W. Schöllkopf, & M. Wolf
Second harmonic generation spectroscopy in the Reststrahl band of SiC using an infrared free-electron laser
W. Schöllkopf, S. Gewinner, H. Junkes, A. Paarmann, G. von Helden, H. Bluem, A.M.M. Todd
The new IR and THz FEL facility at the Fritz Haber Institute in Berlin
2014
M. Müller, A. Paarmann, and R. Ernstorfer
Femtosecond electrons probing currents and atomic structure in nanomaterials