SKM 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 17: THz and MIR physics in semiconductors

HL 17.7: Vortrag

Dienstag, 28. März 2023, 11:30–11:45, JAN 0027

Coherent State Steering in Condensed Matter Systems with Strong Light-Matter Engineering — •Michael Spencer, Joanna Urban, Maxamillian Frenzel, and Sebastian Maehrlein — Department of Physical Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany

Physical properties of materials are derived largely from their chemical constituents, structural arrangement, and local properties such as temperature and dielectric environment. Next-generation materials science is increasingly focused on manipulation of structural properties in order to access material properties on-demand, in search of emergent, enhanced, or even hidden states of matter. One such method to transiently modify crystalline materials is the application of intense terahertz (THz) laser pulses. These pulses allow for resonant and selective excitation of infrared-active vibrational modes (phonons) of a crystal, allowing for coherent and ultrafast modulation of condensed-matter system properties. With the introduction of an electromagnetic cavity, the subsequent enhancement of this light-matter interaction between the intense THz radiation and the phonons will provide expanded control over excited-state steering, allowing access to exotic, transient states of matter. I will present our steps towards first realizations of such strongly-coupled light-matter interactions of phonons in crystalline materials within the THz frequency range. In addition, I will discuss our novel measurement techniques for the detection of strong light-matter interactions, where we utilize the unique technical capabilities of terahertz time-domain spectroscopy.