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
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Designing hybrid-guidance large mode area fiber for high-power lasers
Results in Physics, 2023 All-solid large-mode-area antiresonant fibers possess unique characteristics of broadband, low-loss transmission of fundamental mode with effective single mode operation.
Charu Goel, Seongwoo Yoo, Wonkeun Chang
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Towards CW modelocked laser on chip - a large mode area and NLI for stretched pulse mode locking. [PDF]
Optics Express, 2020 Integrated modelocked lasers with high power are of utmost importance for next generation optical systems that can be field-deployable and mass produced.
Neetesh Singh, E. Ippen, F. Kärtner
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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
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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
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Large-mode-area multicore Yb-doped fiber for an efficient high power 976 nm laser.
Optics Express, 2021 We present an efficient 976 nm laser generation from an ytterbium (Yb)-doped step-index multicore fiber (MCF) with six cores placed in a ring shape. Each of the six cores has a large-mode-area (LMA) and a low numerical aperture (NA), which makes the MCF ...
Hui-Zi Li +7 more
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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
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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
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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
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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
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