Results 11 to 20 of about 41,186 (295)

Rotation Active Sensors Based on Ultrafast Fibre Lasers

open access: yesSensors, 2021
Gyroscopes merit an undeniable role in inertial navigation systems, geodesy and seismology. By employing the optical Sagnac effect, ring laser gyroscopes provide exceptionally accurate measurements of even ultraslow angular velocity with a resolution up ...
Igor Kudelin   +2 more
doaj   +1 more source

Crystalline waveguides with carbon nanomaterials for miniaturized pulsed lasers - INVITED [PDF]

open access: yesEPJ Web of Conferences, 2023
This presentation discusses the recent results on miniaturized pulsed solid-state lasers by utilizing femtosecond-laser inscribed crystalline channel waveguides and carbon-nanomaterial-based saturable absorbers.
Bae Ji Eun, Rotermund Fabian
doaj   +1 more source

Carbon nanotube mode-locked fiber lasers: recent progress and perspectives

open access: yesNanophotonics, 2020
Carbon nanotubes (CNTs) possess remarkable nonlinear optical properties; a particular application is to function as a mode locker used in ultrafast fiber lasers to produce ultrashort optical pulses.
Dai Lilong   +7 more
doaj   +1 more source

Ultrafast Pulse Generation from Quantum Cascade Lasers

open access: yesMicromachines, 2022
Quantum cascade lasers (QCLs) have broken the spectral barriers of semiconductor lasers and enabled a range of applications in the mid-infrared (MIR) and terahertz (THz) regimes. However, until recently, generating ultrashort and intense pulses from QCLs
Feihu Wang   +4 more
doaj   +1 more source

Distinct Cellular Profiles of Hif1a and Vegf mRNA Localization in Microglia, Astrocytes and Neurons during a Period of Vascular Maturation in the Auditory Brainstem of Neonate Rats

open access: yesBrain Sciences, 2021
Defining the relationship between vascular development and the expression of hypoxia-inducible factors (Hifs) and vascular endothelial growth factor (Vegf) in the auditory brainstem is important to understand how tissue hypoxia caused by oxygen shortage ...
Daphne Chang   +6 more
doaj   +1 more source

Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices [PDF]

open access: yes, 2010
Spin-polarized lasers offer new encouraging possibilities for future devices. We investigate the polarization dynamics of electrically pumped vertical-cavity surface-emitting lasers after additional spin injection at room temperature.
Ackemann, T.   +5 more
core   +1 more source

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

open access: yesPhotonics, 2021
Fiber laser technology has been demonstrated as a versatile and reliable approach to laser source manufacturing with a wide range of applicability in various fields ranging from science to industry.
Hossein Fathi   +2 more
doaj   +1 more source

Recent Progress of Two-Dimensional Materials for Ultrafast Photonics

open access: yesNanomaterials, 2021
Owing to their extraordinary physical and chemical properties, two-dimensional (2D) materials have aroused extensive attention and have been widely used in photonic and optoelectronic devices, catalytic reactions, and biomedicine.
Aojie Zhang   +6 more
doaj   +1 more source

The amazing progress of high-power ultrafast thin-disk lasers

open access: yesJournal of the European Optical Society-Rapid Publications, 2019
Ultrafast lasers continue to be at the forefront of many scientific breakthroughs and technological achievements and progress in the performance of these systems continue to open doors in many new and exciting interdisciplinary fields.
Clara J. Saraceno   +3 more
doaj   +1 more source

A Chaotic State in the Transition From Single Toward Multiple Pulse for Soliton Fiber Lasers

open access: yesIEEE Photonics Journal, 2020
High-order soliton in anomalous-dispersion ultrafast fiber lasers is rarely researched due to its intrinsic instability in dissipative systems. For the first time, we numerically demonstrate the ultrafast pulse in fiber lasers will deviate from the ...
Yueqing Du, Mengmeng Han, Xuewen Shu
doaj   +1 more source

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