Results 21 to 30 of about 253,283 (318)

Welding with high power fiber lasers - A preliminary study. [PDF]

open access: yes, 2007
The new generation of high power fiber lasers presents several benefits for industrial purposes, namely high power with low beam divergence, flexible beam delivery, low maintenance costs, high efficiency and compact size.
Costa, A.   +5 more
core   +1 more source

High-power amplified spontaneous emission pulses with tunable coherence for efficient non-linear processes

open access: yesScientific Reports, 2021
We report on a detailed study of an amplified spontaneous emission source operated in a pulsed regime with particular attention paid to the influence of high-intensity chaotic temporal events on the generation of nonlinear processes. To this aim, we have
Nicolas Valero   +6 more
doaj   +1 more source

Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation

open access: yesNanomaterials, 2022
This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water.
Cristina Craciun   +7 more
doaj   +1 more source

Dual wavelength digital holography for 3D particle image velocimetry [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
A multi-exposure digital in-line hologram of a moving particle field is recorded by two different wavelengths and at different times. As a result, during the reconstruction step, each hologram can be independently and accurately reconstructed for each ...
Grare S.   +5 more
doaj   +1 more source

Phase-sensitive seeded modulation instability in passive fiber resonators

open access: yesCommunications Physics, 2022
Modulation instability refers to the sensitivity of dispersive, weakly nonlinear systems to small perturbations and may be used as a source of optical gain.
Florent Bessin   +5 more
doaj   +1 more source

Hydroxyapatite Thin Films of Marine Origin as Sustainable Candidates for Dental Implants

open access: yesPharmaceutics, 2023
Novel biomaterials with promising bone regeneration potential, derived from rich, renewable, and cheap sources, are reported. Thus, thin films were synthesized from marine-derived (i.e., from fish bones and seashells) hydroxyapatite (MdHA) by pulsed ...
Gabriela Dorcioman   +11 more
doaj   +1 more source

Laser optomechanics [PDF]

open access: yesScientific Reports, 2015
AbstractCavity optomechanics explores the interaction between optical field and mechanical motion. So far, this interaction has relied on the detuning between a passive optical resonator and an external pump laser. Here, we report a new scheme with mutual coupling between a mechanical oscillator supporting the mirror of a laser and the optical field ...
Gerke, Stephen   +5 more
openaire   +6 more sources

Passively mode-locked semiconductor lasers and their applications [PDF]

open access: yes, 2008
In this paper we present some characterizations of passively mode-locked semiconductor lasers. These lasers are multimode and they exhibit a modulation of their output power even though they are DC-biased.
Frederic Surre   +5 more
core   +1 more source

Single-shot measurement of the photonic band structure in a fiber-based Floquet-Bloch lattice

open access: yesCommunications Physics, 2021
Floquet-Bloch lattices are systems that are relatively difficult to implement in solid-state physics. Here, using a photonic lattice as an alternative, the authors experimentally observe Floquet-Bloch bands using a single-shot method which allows them to
Corentin Lechevalier   +5 more
doaj   +1 more source

Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer

open access: yesNanomaterials, 2021
Ammonia is one of the most frequently produced chemicals in the world, and thus, reliable measurements of different NH3 concentrations are critical for a variety of industries, among which are the agricultural and healthcare sectors.
Anca F. Bonciu   +4 more
doaj   +1 more source

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