Coherent upconversion of terahertz and mid-infrared signals into visible light opens new
horizons for spectroscopy, imaging, and sensing but represents a challenge for conventional …

Multiphoton absorption and luminescence are fundamentally important nonlinear processes
for utilizing efficient light–matter interaction. Resonant enhancement of nonlinear processes …

Chemical imaging offers critical information to understand the fundamentals in biology and
to assist clinical diagnostics. Label-free chemical imaging piques a general interest since it …

The possibility to manipulate quantum coherence and interference, apart from its
fundamental interest in quantum mechanics, is essential for controlling nonlinear optical …

Improving nonlinear optics efficiency is currently one of the hotspots in modern optical
research. Moreover, with the maturity of nonlinear optical microscope systems, more and …

The high quantum efficiency and long lifetimes of upconverting rare-earth-doped systems
make luminescence band spectral overlap a particularly common phenomenon, frequently …

We develop a background-free single-beam coherent Raman scattering technique enabling
the high-sensitivity detection of greenhouse gases. In this scheme, Raman coherence …

We propose a method for increasing Raman scattering from an ensemble of molecules by
up to 4 orders of magnitude. Our method requires an additional coherent source of IR …

Molecular vibrational spectroscopy is widely used in various sensing and imaging
applications, providing intrinsic information at the molecular level. Nonlinear optical …

High-order nonlinearity enables larger signal enhancements in two-photon spectroscopy
compared to one-photon spectroscopy, which is important for conducting …