Over the past few decades, coherent broadband spectroscopy has been widely used to
improve our understanding of ultrafast processes (eg, photoinduced electron transfer, proton …

Two-dimensional (2D) optical spectroscopy utilizing multiple ultrafast coherent laser pulses
in the infrared or UV-vis frequency range has been used to study protein structure and …

Semiconductors with high thermal conductivity and electron-hole mobility are of great
importance for electronic and photonic devices as well as for fundamental studies. Among …

Time-resolved optical spectroscopy is widely used to study vibrational and electronic
dynamics by monitoring transient changes in excited state populations on a femtosecond …

Wavelike thermal transport in solids, referred to as second sound, is an exotic phenomenon
previously limited to a handful of materials at low temperatures. The rare occurrence of this …

The rapid emergence of nanoplasmonics as a novel technology has been driven by recent
progress in the fabrication, characterization, and understanding of metal‐nanoparticle …

Free-electron lasers and high-harmonic-generation table-top systems are new sources of
extreme-ultraviolet to hard X-ray photons, providing ultrashort pulses that are intense …

The “textbook” phonon mean free path of heat carrying phonons in silicon at room
temperature is∼ 40 nm. However, a large contribution to the thermal conductivity comes …

Two-dimensional (2D) spectroscopy is a powerful technique to study nuclear and electronic
correlations between different transitions or initial and final states. Here we describe in detail …

Vibrational sum-frequency generation (VSFG) spectroscopy is a powerful tool to study
interfaces. Recently, multiplex heterodyne-detected VSFG (HD-VSFG) has been developed …