Results 21 to 30 of about 127,900 (289)

A Review of Femtosecond Laser-Induced Emission Techniques for Combustion and Flow Field Diagnostics

open access: yesApplied Sciences, 2019
The applications of femtosecond lasers to the diagnostics of combustion and flow field have recently attracted increasing interest. Many novel spectroscopic methods have been developed in obtaining non-intrusive measurements of temperature, velocity, and
Bo Li   +5 more
doaj   +1 more source

Investigation of ultrafast laser photonic material interactions: challenges for directly written glass photonics [PDF]

open access: yes, 2008
Currently, direct-write waveguide fabrication is probably the most widely studied application of femtosecond laser micromachining in transparent dielectrics.
Ams, M.   +6 more
core   +2 more sources

Studying of photoluminescence property of carbazole unit based push-pull oligomers

open access: yesAIP Advances, 2019
The photoluminescence (PL) property of two push-pull oligomers named C2B and DC2B, comprising of carbazole and difluoroboron β-diketonate units, were probed by many optical tests.
Ying Chen   +7 more
doaj   +1 more source

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

Imaging of Alignment, Deformation and Dissociation of CS2 Molecules using Ultrafast Electron Diffraction [PDF]

open access: yes, 2015
Imaging the structure of molecules in transient excited states remains a challenge due to the extreme requirements for spatial and temporal resolution.
Beck, Joshua   +3 more
core   +3 more sources

Femtosecond laser-induced herringbone patterns [PDF]

open access: yesApplied Physics A, 2018
Femtosecond laser-induced herringbone patterns are formed on copper (Cu). These novel periodic structures are created following s-polarized, large incident angle, femtosecond laser pulses. Forming as slanted and axially symmetric laser-induced periodic surface structures along the side walls of ablated channels, the result is a series of v-shaped ...
Garcell, Erik M.   +2 more
openaire   +2 more sources

Revealing Local Temporal Profile of Laser Pulses of Intensity above 1014 W/cm2

open access: yesSensors, 2023
We demonstrated a method for in situ temporal characterization of an intense femtosecond laser pulse around its focus where the laser intensity exceeds 1014 W/cm2.
Qi Lu   +3 more
doaj   +1 more source

Thermally-Reconfigurable Quantum Photonic Circuits at Telecom Wavelength by Femtosecond Laser Micromachining [PDF]

open access: yes, 2015
The importance of integrated quantum photonics in the telecom band resides on the possibility of interfacing with the optical network infrastructure developed for classical communications.
Crespi, Andrea   +10 more
core   +3 more sources

Roles of Free Electrons and H2O2 in the Optical Breakdown-Induced Photochemical Reduction of Aqueous [AuCl4]- [PDF]

open access: yes, 2017
Free electrons and H2O2 formed in an optical breakdown plasma are found to directly control the kinetics of [AuCl4]− reduction to form Au nanoparticles (AuNPs) during femtosecond laser-assisted synthesis of AuNPs.
John, Mallory G   +3 more
core   +2 more sources

Femtosecond petawatt laser [PDF]

open access: yesAnnalen der Physik, 2014
AbstractThe high‐power femtosecond laser has now become an excellent scientific tool for the study of not only relativistic laser–matter interactions but also scientific applications. The high‐power femtosecond laser depends on the Kerr‐lens modelocking (KLM) and chirped‐pulse amplification (CPA) technique.
Tae Moon Jeong, Jongmin Lee
openaire   +1 more source

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