Results 21 to 30 of about 488,564 (288)
Electrically pumped two-dimensional Bragg grating lasers [PDF]
, 2006 We demonstrate electrically pumped InGaAsP two-dimensional Bragg grating (2DBG) lasers with two line defects. The 2DBG structure uses a weak 2D index perturbation surface grating to control the optical modes in the plane of the wafer. Measurements of the
Choi, John M. +4 more
core +1 more source
Phase-sensitive seeded modulation instability in passive fiber resonators
Communications 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
Fiber-laser-pumped Ti:sapphire Laser [PDF]
Conference 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
Single-shot measurement of the photonic band structure in a fiber-based Floquet-Bloch lattice
Communications 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
Hydroxyapatite Thin Films of Marine Origin as Sustainable Candidates for Dental Implants
Pharmaceutics, 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
Dual wavelength digital holography for 3D particle image velocimetry [PDF]
Journal 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
Photonic crystal laser sources for chemical detection [PDF]
, 2003 We have realized photonic crystal lasers that permit the introduction of analyte within the peak of the optical field of the lasing mode. We have explored the design compromises for developing such sensitive low-threshold spectroscopy sources, and ...
Lončar, Marko +2 more
core +1 more source
Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation
Nanomaterials, 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
Very low threshold InGaAsP mesa laser [PDF]
, 1983 Very low threshold currents InGaAsP/InP terrace mesa (T-ME) lasers with an unpassivated surface have been fabricated on semi-insulating (SI) InP substrates. Fabrication of the lasers involves a single-step liquid phase epitaxial (LPE) growth and a simple
Chen, T. R. +6 more
core +1 more source
Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer
Nanomaterials, 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