Results 11 to 20 of about 2,670,244 (299)
Photonic-chip integrated large-mode-area high-power CW optical amplifier [PDF]
EPJ Web of Conferences, 2023 Here, we report on a CMOS-compatible thulium-doped high power continuous wave (CW) optical amplifier, leveraging large mode-area gain waveguides. The amplifier structure combines a silicon nitride waveguide above which a sputtered 1250 nm-thick thulium ...
Gaafar Mahmoud A. +11 more
doaj +1 more source
M2 factor for evaluating fiber lasers from large mode area few-mode fibers
Frontiers in Physics, 2023 Evaluating the laser quality accurately is one of the most important and fundamental physical issues for laser sources, and the beam quality of lasers from the large mode area few-mode fibers have been haunted by the presence of high order mode for many ...
Rumao Tao +7 more
doaj +1 more source
A Large Mode Area Parabolic-Profile Core Fiber with Modified Segmented in Cladding
Photonics, 2022 In this paper, a novel fiber with a parabolic-profile core and eight segmented trenches in cladding is designed. The designed fiber consists of the segmented trench of low refractive index in cladding and parabolic-profile of high refractive index in the
Song Yang +4 more
doaj +1 more source
Passive Mode-Locked Operation of Large Mode Area Fibre Lasers [PDF]
CLEO/Europe Conference on Lasers and Electro-Optics, 1998 Recently much work on fibre lasers has concentrated on improving the maximum output energy and peak powers available from such systems. An important recent advance in this area has been the development of single transverse-mode, large mode area (LMA-) doped fibre1.
Broderick, N.G.R. +5 more
openaire +2 more sources
Photonic crystal fibres: mapping Maxwell’s equations onto a Schrödinger equation eigenvalue problem [PDF]
Journal of the European Optical Society-Rapid Publications, 2006 We consider photonic crystal fibres (PCFs) made from arbitrary base materials and introduce a short-wavelength approximation which allows for a mapping of the Maxwell’s equations onto a dimensionless eigenvalue equations which has the form of the ...
Mortensen Niels Asger
doaj +1 more source
Large mode area double-layer all-solid anti-resonant fiber for high-power fiber lasers
Results in Physics, 2021 A novel double-layer all-solid anti-resonant fiber (DL-AAF) is proposed to develop large mode area (LMA) fiber for high-power fiber laser applications. Single-mode property and mode field area scaling are investigated in simulations.
Zhen Xing +3 more
doaj +1 more source
Investigation of a Large-Mode-Area Fiber Designed for 2.0 μm Based on Multi-Layer Holes Resonance
IEEE Photonics Journal, 2023 This work proposes a novel large mode area fiber with multi-layer holes of 2.0 μm based on electromagnetic field theory and finite element analysis. Modifying the structure parameters can reduce the fundamental mode confinement loss to less than 0.
Xiao Shen +3 more
doaj +1 more source
IEEE Photonics Journal, 2021 A resonant-ring-assisted large mode area segmented cladding fiber (RR-SCF) with a high-index ring in the core is proposed. Numerical investigations of the effects of the high-index ring on the leakage losses of guiding modes, mode area, and electric ...
Z. Guo +5 more
doaj +1 more source
Energy Scaling of an Ultrafast All-PM-Fiber Laser Oscillator
IEEE Access, 2020 In this article we demonstrate the first, to the best of our knowledge, all-fiber self-starting laser oscillator consisting entirely of polarization-maintaining large mode area (PLMA) fibers mode-locked with nonlinear optical loop mirror (NOLM).
Mateusz Pielach +4 more
doaj +1 more source
Large Area Detection of Microstructural Defects with Multi-Mode Ultrasonic Signals
Applied Sciences, 2022 Cyclic loading or other stresses can lead to development of cracks and crack growth in mechanical structures, leading to eventual failure. While ultrasound imaging can be used for non-destructive testing of such structures, conventional ultrasound ...
Taeho Ju, Alp T. Findikoglu
doaj +1 more source