Results 21 to 30 of about 198,874 (293)

Self-compression of 4.9 µm pulses to sub-40 fs with 2 mJ energy in Zinc Sulfide [PDF]

open access: yesEPJ Web of Conferences
Nonlinear self-compression of few-cycle multi-mJ pulses at 4.9 µm in ZnS is presented. 80 fs input pulses are compressed to 37 fs with 2.1 mJ energy at a 1 kHz repetition rate. © 2024 The Author(s)
Bock Martin   +2 more
doaj   +1 more source

Ultrashort Vortex Pulses with Controlled Spectral Gouy Rotation

open access: yesApplied Sciences, 2020
Recently, the spatio-spectral propagation dynamic of ultrashort-pulsed vortex beams was demonstrated by 2D mapping of spectral moments. The rotation of characteristic anomalies, so-called “spectral eyes”, was explained by wavelength-dependent Gouy phase ...
Max Liebmann   +4 more
doaj   +1 more source

Efficient generation of few-cycle pulses beyond 10 μm from an optical parametric amplifier pumped by a 1-µm laser system

open access: yesScientific Reports, 2022
Nonlinear vibrational spectroscopy profits from broadband sources emitting in the molecular fingerprint region. Yet, broadband lasers operating at wavelengths above 7 μm have been lacking, while traditional cascaded parametric frequency down-conversion ...
Zsuzsanna Heiner   +6 more
doaj   +1 more source

Needle beams: a review

open access: yesAdvances in Physics: X, 2020
Needle beams are highly attractive for applications which take advantage from a spatial and temporal localization of photons. High intensities, high resolution and extended depth of focus lead to fundamental advances in the optical system performance ...
Ruediger Grunwald, Martin Bock
doaj   +1 more source

Evaluation of polymer based third order nonlinear integrated optics devices [PDF]

open access: yes, 1998
Nonlinear polymers are promising materials for high speed active integrated optics devices. In this paper we evaluate the perspectives polymer based nonlinear optical devices can offer. Special attention is directed to the materials aspects.
Blom, F.C.   +8 more
core   +2 more sources

Fast and accurate modelling of nonlinear pulse propagation in graded-index multimode fibers [PDF]

open access: yes, 2017
We develop a model for the description of nonlinear pulse propagation in multimode optical fibers with a parabolic refractive index profile. It consists in a 1+1D generalized nonlinear Schr\"odinger equation with a periodic nonlinear coefficient, which ...
Arabi, Carlos Mas   +3 more
core   +4 more sources

Modelling efficient BB84 with applications for medium-range, terrestrial free-space QKD

open access: yesNew Journal of Physics, 2022
Terrestrial free-space (FS) quantum key distribution (QKD) is ideally suited for deployment in dense urban environments. The transition from laboratory to commercial deployment, however, raises a number of important engineering and deployment issues ...
Thomas Brougham, Daniel K L Oi
doaj   +1 more source

Cross-polarized photon-pair generation and bi-chromatically pumped optical parametric oscillation on a chip [PDF]

open access: yes, 2015
Nonlinear optical processes are one of the most important tools in modern optics with a broad spectrum of applications in, for example, frequency conversion, spectroscopy, signal processing and quantum optics.
A Pasquazi   +32 more
core   +3 more sources

Decoupling frequencies, amplitudes and phases in nonlinear optics [PDF]

open access: yes, 2017
In linear optics, light fields do not mutually interact in a medium. However, they do mix when their field strength becomes comparable to electron binding energies in the so-called nonlinear optical regime.
Clerici, Matteo   +6 more
core   +1 more source

Negative refraction in nonlinear wave systems [PDF]

open access: yes, 2007
People have been familiar with the phenomenon of wave refraction for several centuries. Recently, a novel type of refraction, i.e., negative refraction, where both incident and refractory lines locate on the same side of the normal line, has been ...
Gang Hu   +5 more
core   +1 more source

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