Results 11 to 20 of about 198,874 (293)

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

Continuous-Wave and Mode-Locked Operation of an In-Band Pumped Tm,Ho,Lu:CaGdAlO4 Laser

open access: yesApplied Sciences, 2023
We investigate in-band pumping of a Tm,Ho,Lu:CaGdAlO4 laser using a Raman-shifted Er-fiber laser (1678 nm), in the continuous-wave (CW) and mode-locked (ML) regimes.
Huangjun Zeng   +10 more
doaj   +1 more source

Micromechanical resonator with dielectric nonlinearity [PDF]

open access: yes, 2018
Nonlinear response of dielectric polarization to electric field in certain media is the foundation of nonlinear optics. Optically, such nonlinearities are observed at high light intensities, achievable by laser, where atomic-scale field strengths ...
Boales, Joseph   +3 more
core   +1 more source

Generation of 22-mJ, 2.0-ps Pulses from a 1-kHz Ho:YLF Regenerative Chirped Pulse Amplifier [PDF]

open access: yesEPJ Web of Conferences
We report a CW-pumped Ho:YLF regenerative amplifier (RA) delivering pulses with 22.5-mJ energy and 2.0-ps duration at 1 kHz. The RA emitting at 2051 nm is broadband-seeded and implemented in a chirped pulse amplification system. © 2024 The Author(s)
Bock Martin   +4 more
doaj   +1 more source

Time-reversed wave mixing in nonlinear optics [PDF]

open access: yes, 2013
Time-reversal symmetry is important to optics. In linear optics, a time-reversed process to laser emission enables total absorption of coherent light fields into an optical cavity of loss by time-reversing the original gain medium.
Chen, Xianfeng   +3 more
core   +2 more sources

Symmetric spatio-temporal focusing of ultrashort pulses [PDF]

open access: yesEPJ Web of Conferences, 2020
Simultaneous spatio-temporal focusing of few-cycle pulses is usually performed by stretcher-compressor configurations causing pulse-front tilt. By shaping and superimposing two reciprocal sub-beams, opposite tilts can compensate each other.
Treffer A.   +3 more
doaj   +1 more source

Nonlinear Optics and Spectroscopy [PDF]

open access: yesLaser Chemistry, 1982
ing's vector it follows that the light amplitude at the focal spot would reach 108 volts per centimeter, comparable to the electric field internal to the atoms and molecules responsible for the binding of valence electrons. These are literally pulled out of their orbits in multiphoton tunneling processes, and any material will be converted to a highly ...
openaire   +3 more sources

Extracting sub-cycle electronic and nuclear dynamics from high harmonic spectra

open access: yesScientific Reports, 2021
We present a new methodology for measuring few-femtosecond electronic and nuclear dynamics in both atoms and polyatomic molecules using multidimensional high harmonic generation (HHG) spectroscopy measurements, in which the spectra are recorded as a ...
Dane R. Austin   +14 more
doaj   +1 more source

Long-Term Absolute Frequency Stabilization of a Hybrid-Integrated InP-Si3N4 Diode Laser

open access: yesIEEE Photonics Journal, 2023
Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with low-loss Si$_{3}$N$_{4}$-based feedback circuits enable great laser performance for advanced photonic circuits.
Albert van Rees   +6 more
doaj   +1 more source

Highly efficient soft x-ray spectrometer for transient absorption spectroscopy with broadband table-top high harmonic sources

open access: yesStructural Dynamics, 2021
We present a novel soft x-ray spectrometer for ultrafast absorption spectroscopy utilizing table-top femtosecond high-order harmonic sources. Where most commercially available spectrometers rely on spherical variable line space gratings with a typical ...
Carlo Kleine   +13 more
doaj   +1 more source

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