Results 11 to 20 of about 24,834 (263)

Linearizing Nonlinear Optics [PDF]

open access: yesEPJ Web of Conferences, 2019
Fourier nonlinear optics merges the simplicity of linear optics with the power of nonlinear optics to achieve a decoupling of frequencies, amplitudes and phases in nonlinear processes - enabling first deep UV shaping at 207nm.
Bruno E. Schmidt   +6 more
doaj   +6 more sources

Nonlinear Optics in Two-Dimensional Magnetic Materials: Advancements and Opportunities. [PDF]

open access: yesNanomaterials (Basel)
Nonlinear optics, a critical branch of modern optics, presents unique potential in the study of two-dimensional (2D) magnetic materials. These materials, characterized by their ultra-thin geometry, long-range magnetic order, and diverse electronic ...
Xin Z, Xue B, Chang W, Zhang X, Shi J.
europepmc   +2 more sources

Single-stage GaSe OPCPA delivering high-energy few-cycle pulses at 11 µm wavelength – INVITED [PDF]

open access: yesEPJ Web of Conferences, 2023
The generation of sub-five optical cycle pulses centered at 11.2 µm wavelength with 50 µJ energy at a 1 kHz repetition rate is reported. A GaSe optical parametric chirped pulse amplifier (OPCPA) is driven by the residual 2.0 µm pump and 5 µm idler of a ...
Bock Martin   +3 more
doaj   +1 more source

Time-resolved photoelectron spectroscopy of organic molecules in aqueous solutions [PDF]

open access: yesEPJ Web of Conferences, 2019
We use time-resolved photoelectron spectroscopy with wavelength-selected XUV femtosecond pulses to study photoinduced dynamics of organic molecules in solutions at millimolar concentrations.
Hummert Johan   +5 more
doaj   +1 more source

Spectral meta-moments reveal hidden signatures of vortex pulses [PDF]

open access: yesEPJ Web of Conferences, 2019
Ultrashort vortex pulses possess specific spatio-spectral signatures due to Gouy phase shift. Helical movement of anomalies around the phase singularity was found which is referred to as spectral Gouy rotation. The analysis of spectral moments allows for
Liebmann Max   +6 more
doaj   +1 more source

Controlled compression, amplification and frequency up-conversion of optical pulses by media with time-dependent refractive index

open access: yesNanophotonics, 2023
Control over the time dependence of the refractive index of a material allows one to modify and manipulate the properties of light propagating through it.
Löhr Alexander Gabriel   +2 more
doaj   +1 more source

Pump–probe x-ray microscopy of photo-induced magnetization dynamics at MHz repetition rates

open access: yesStructural Dynamics, 2023
We present time-resolved scanning x-ray microscopy measurements with picosecond photo-excitation via a tailored infrared pump laser at a scanning transmission x-ray microscope.
Kathinka Gerlinger   +13 more
doaj   +1 more source

Optical inter-site spin transfer probed by energy and spin-resolved transient absorption spectroscopy

open access: yesNature Communications, 2020
Optically driven spin transfer is the fastest process to manipulate magnetism. Here, the authors show that this process emerges as the dominant mechanism in femtosecond spin dynamics enabling to the engineering of functional magnetic systems for future ...
Felix Willems   +8 more
doaj   +1 more source

Guided-wave photodetectors in germanium on optical chips in silicon-on-insulator [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
We report the integration of near-infrared waveguide photodetectors in polycrystalline Germanium with Silicon on Insulator optical chips for power monitor applications. We discuss design and fabrication of the devices as well as their characterization in
Sorianello V.   +5 more
doaj   +1 more source

Spatially encoded localized wavepackets for ultrafast optical data transfer [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Arrays of highly localized wavepackets enable for an efficient multichannel processing of optical data because of their undistorted propagation in space and time domain.
Grunwald R., Bock M.
doaj   +1 more source

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