Results 21 to 30 of about 1,473,983 (338)

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

Large optical cavity AlGaAs buried heterostructure window lasers [PDF]

open access: yes, 1982
Large optical cavity buried heterostructure window lasers in which only the transparent AlGaAs waveguiding layers, and not the active layer, extend to the laser mirrors have been fabricated.
Blauvelt, H., Margalit, S., Yariv, A.
core   +1 more source

Fiber-laser-pumped Ti:sapphire Laser [PDF]

open access: yesConference on Lasers and Electro-Optics 2010, 2010
We report the first experimental demonstration of efficient and high-power operation of a Ti:sapphire laser pumped by a simple, compact, continuous-wave (cw) fiber-laser-based green source. The pump radiation is obtained by direct single-pass second-harmonic-generation (SHG) of a 33-W, cw Yb-fiber laser in 30-mm-long MgO:sPPLT crystal, providing 11 W ...
Samanta, G. K.   +3 more
openaire   +2 more sources

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

Visible submicron microdisk lasers [PDF]

open access: yes, 2007
The authors describe the performance of submicron microdisk lasers fabricated within InGaP/InGaAlP quantum well material working at room temperature. The smallest lasers, with diameters of approximately 600 nm, feature ultrasmall mode volumes and exhibit
Hong, Ting   +5 more
core   +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

Low-threshold photonic crystal laser [PDF]

open access: yes, 2002
We have fabricated photonic crystal nanocavity lasers, based on a high-quality factor design that incorporates fractional edge dislocations. Lasers with InGaAsP quantum well active material emitting at 1550 nm were optically pumped with 10 ns pulses, and
Gogna, Pawan   +4 more
core   +2 more sources

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

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

Mode stabilized terrace InGaAsP lasers on semi-insulating InP [PDF]

open access: yes, 1982
Mode stabilized terrace InGaAsP lasers have been fabricated on semi-insulating InP substrates. The fabrication involves a selective, single-step liquid phase epitaxial growth process, and a lateral Zn diffusion.
Chen, T. R.   +5 more
core   +1 more source

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