Recent progress in utilizing ultrafast light-matter interaction to control the macroscopic
properties of quantum materials is reviewed. Particular emphasis is placed on photoinduced …

Terahertz radiation has become an important diagnostic tool in the development of new
technologies. However, the diffraction limit prevents terahertz radiation (λ≈ 0.01–3 mm) …

Terahertz (THz) radiation encompasses a wide spectral range within the electromagnetic
spectrum that extends from microwaves to the far infrared (100 GHz–∼ 30 THz). Within its …

In this brief review, we summarize and elaborate on some of the nomenclature of polaritonic
phenomena and systems as they appear in the literature on quantum materials and …

The birth of terahertz imaging approximately coincides with the birth of the journal Optics
Express. The 20^ th anniversary of the journal is therefore an opportune moment to consider …

The past decade has witnessed an explosion in the field of quantum materials, headlined by
the predictions and discoveries of novel Landau-symmetry-broken phases in correlated …

Science and technologies based on terahertz frequency electromagnetic radiation (100 GHz–
30 THz) have developed rapidly over the last 30 years. For most of the 20th Century …

Infrared and optical spectroscopy represents one of the most informative methods in
advanced materials research. As an important branch of modern optical techniques that has …

Lightwave-driven terahertz scanning tunnelling microscopy (THz-STM) is capable of
exploring ultrafast dynamics across a wide range of materials with ångström resolution (10 …

We discuss the progress in the field of THz imaging based on time-domain spectroscopy
during the last 20 years emphasizing several highlights. These include 3D map** of the …