Coherent dynamics in condensed matter systems studied by mid-infrared multidimensional spectroscopy

Ultrafast Multidimensional Spectroscopy with Field Resolution and Noncollinear Geometry at Mid-Infrared Frequencies

New Journal of Physics ◽

10.1088/1367-2630/ac4a16 ◽

2022 ◽

Author(s):

Thomas Deckert ◽

Jonas Allerbeck ◽

Takayuki Kurihara ◽

Daniele Brida

Keyword(s):

Indium Antimonide ◽

Condensed Matter ◽

Low Energy ◽

Modulation Scheme ◽

Many Body ◽

Advanced Technique ◽

Mid Infrared ◽

Multidimensional Spectroscopy ◽

Infrared Frequencies ◽

Many Body Interactions

Abstract Energetic correlations and their dynamics govern the fundamental properties of condensed matter materials. Ultrafast multidimensional spectroscopy in the mid infrared is an advanced technique to study such coherent low-energy dynamics. The intrinsic many-body phenomena in functional solid-state materials, in particular few-layer samples, remain widely unexplored to this date, because complex and weak sample responses demand versatile and sensitive detection. Here, we present a novel setup for ultrafast multidimensional spectroscopy with noncollinear geometry and complete field resolution in the 15-40 THz range. Electric fields up to few-100 kV cm-1 drive coherent dynamics in a perturbative regime, and an advanced modulation scheme allows to detect nonlinear signals down to a few tens of V cm-1 entirely background-free with high sensitivity and full control over the geometric phase-matching conditions. Our system aims at the investigation of correlations and many-body interactions in condensed matter systems at low energy. Benchmark measurements on bulk indium antimonide (InSb) reveal a strong six-wave mixing signal and map ultrafast changes of the band structure with access to amplitude and phase information. Our results pave the way towards the investigation of functional thin film materials and few-layer samples.

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Coherent propagation of subpicosecond pulses in the mid-infrared in condensed matter

Optics Communications ◽

10.1016/0030-4018(93)90320-5 ◽

1993 ◽

Vol 101 (1-2) ◽

pp. 43-48 ◽

Cited By ~ 14

Author(s):

R. Laenen ◽

A. Laubereau

Keyword(s):

Condensed Matter ◽

Mid Infrared ◽

Subpicosecond Pulses

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Inelastic scattering at surfaces and interfaces

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143560 ◽

1986 ◽

Vol 44 ◽

pp. 392-393

Author(s):

R. H. Ritchie ◽

A. Howie

Keyword(s):

Inelastic Scattering ◽

Surface Properties ◽

Correlation Energy ◽

Condensed Matter ◽

Charged Particles ◽

Condensed Matter Physics ◽

Optical Phonons ◽

Exchange Correlation ◽

Surfaces And Interfaces ◽

Inelastic Interactions

An important part of condensed matter physics in recent years has involved detailed study of inelastic interactions between swift electrons and condensed matter surfaces. Here we will review some aspects of such interactions.Surface excitations have long been recognized as dominant in determining the exchange-correlation energy of charged particles outside the surface. Properties of surface and bulk polaritons, plasmons and optical phonons in plane-bounded and spherical systems will be discussed from the viewpoint of semiclassical and quantal dielectric theory. Plasmons at interfaces between dissimilar dielectrics and in superlattice configurations will also be considered.

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