Towards enabling femtosecond helicity-dependent spectroscopy with high-harmonic sources

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Over the last decades, the progress made in the generation of laser pulses shorter than a picosecond (10^-12 s) has allowed us to reach extreme optical power intensities exceeding 10^15 W cm^-2. This tremendous power has triggered an abundance of original ...

Graphite has been intensively studied, yet its electron spins dynamics remains an unresolved problem even 70 years after the first experiments. The central quantities, the longitudinal (T-1) and transverse (T-2) relaxation times were postulated to be equal ...

We demonstrate tunable dispersion compensation of femtosecond pulses at telecom wavelengths for broadband Terahertz generation in 7.5-meter fiber link using a Silicon prism pair. The prism pair enhances the amplitude of the THz E-field in InGaAs photocondu ...

Dense micron-sized electron plasmas, such as those generated upon irradiation of nanostructured metallic surfaces by intense femtosecond laser pulses, constitute a rich playground to study light-matter interactions, many-body phenomena, and out-of-equilibr ...

Bridging the "terahertz gap" relies upon synthesizing arbitrary waveforms in the terahertz domain enabling applications that require both narrow band sources for sensing and few-cycle drives for classical and quantum objects. However, realization of custom ...

Materials properties are strictly dependent on their microstructure. The internal symmetries and the disposition of the constituting atoms of a material, which depend on its crystallographic structure, greatly affect its response to mechanical, electromagn ...

Integrated optics has shown itself very convenient for exploiting nonlinear processes as it results in high confinement factor, freedom of dispersion engineering and compactness. However, the choice of materials is crucial for the development of nonlinear ...

With the advance of on-chip nanophotonics, there is a high demand for high-refractive-index and low-loss materials. Currently, this technology is dominated by silicon, but van der Waals (vdW) materials with a high refractive index can offer a very advanced ...

Quasi-phase-matching for efficient backward second-harmonic generation requires sub-μm poling periods, a nontrivial fabrication feat. For the first time, we report integrated first-order quasiphase-matched backward second-harmonic generation enabled by see ...

Non-linear materials are cornerstones of modern optics and electronics. Strong dependence on the intrinsic properties of particular materials, however, inhibits the at-will extension of demanding non-linear effects, especially those second-order ones, to w ...

High-index dielectric subwavelength structures and metasurfaces are capable of enhancing light-matter interaction by orders of magnitude via geometry-dependent optical resonances. This enhancement, however, comes with a fundamental limitation of a narrow s ...

Low magnetic damping and high group velocity of spin waves (SWs) or magnons are two crucial parameters for functional magnonic devices. Magnonics research on signal processing and wave-based computation at GHz frequencies focused on the artificial ferrimag ...

Towards enabling femtosecond helicity-dependent spectroscopy with high-harmonic sources

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In situ monitoring of femtosecond laser-induced modifications in dielectrics

Ultralong 100 ns spin relaxation time in graphite at room temperature

Tunable pump compression and fast modulation for pulsed THz generation

Generation and control of localized terahertz fields in photoemitted electron plasmas

Terahertz waveform synthesis in integrated thin-film lithium niobate platform

On the interaction of femtosecond laser pulses with layered dielectric materials

Hybrid lithium niobate-on-silicon nitride platform for mid-IR supercontinuum generation

van der Waals Materials for Overcoming Fundamental Limitations in Photonic Integrated Circuitry

Integrated Backward Second-Harmonic Generation through Optically Induced Quasi-Phase-Matching

A universal route to efficient non-linear response via Thomson scattering in linear solids

Spectral Tuning of High-Harmonic Generation with Resonance-Gradient Metasurfaces

Spin wave dispersion of ultra-low damping hematite ( α−Fe2O3 ) at GHz frequencies