Results 11 to 20 of about 4,483 (188)

Heat wave dynamics in frozen water droplets with eosin molecules under the femtosecond excitation of a supercontinuum

open access: yesКонденсированные среды и межфазные границы, 2021
In this study, we considered thermal processes in liquid and frozen water droplets with added dye molecules and metal nanoparticles at the moment of supercontinuum generation.
Natalia A. Myslitskaya   +4 more
doaj   +1 more source

Ultraefficient on‐Chip Supercontinuum Generation from Sign‐Alternating‐Dispersion Waveguides

open access: yesAdvanced Photonics Research, 2023
Fully integrated supercontinuum sources on‐chip are critical to enabling applications such as portable and mechanically stable medical imaging devices, chemical sensing, and light detection and ranging.
Haider Zia   +4 more
doaj   +1 more source

Programmable and tunable flat-top supercontinuum laser sources via electro-optic intensity and phase modulation scheme

open access: yesScientific Reports, 2022
In this study, we presented flat-topped coherent supercontinuum lasers with tunable repetition rates and programmable spectral bandwidths. Supercontinuum sources with ultra-broadband and high-repetition-rate coverage can be achieved by merging ...
Minhyup Song   +7 more
doaj   +1 more source

Ultraviolet-Extended Supercontinuum Generation in Zero-Dispersion Wavelength Decreasing Photonic Crystal Fibers

open access: yesIEEE Photonics Journal, 2020
Supercontinuum covering the ultraviolet-blue region is highly useful for fluorescence microscopy. Four zero-dispersion wavelength decreasing photonic crystal fibers with different fiber cross structures and taper profiles are fabricated to extend the ...
Wanjun Bi   +7 more
doaj   +1 more source

Amplification of Supercontinuum Seed Pulses at ~1078–1355 nm by Cascade Rotational SRS in Compressed Hydrogen

open access: yesApplied Sciences, 2023
Multiple higher-order Stokes of rotational stimulated Raman scattering (SRS) in compressed hydrogen covered the wavelength range from ~1.1 µm to ~1.4 µm using ~1.2 ps pump pulses from a Yb:YAG laser.
Augustinas Petrulėnas   +3 more
doaj   +1 more source

Fabrication of Step−Index Fluorotellurite Fibers with High Numerical Aperture for Coherent Mid—Infrared Supercontinuum

open access: yesCrystals, 2022
We demonstrate the fabrication process and coherent supercontinuum (SC) generation of fluorotellurite step−index fibers with a high numerical aperture (0.56 and 0.64 at 1552 nm).
Yu Li   +3 more
doaj   +1 more source

Oscillating propagation and parametric instability of the partial Gaussian beam in graded-index multimode fibers

open access: yesFrontiers in Physics, 2022
We investigate the input and propagation characteristics and geometric parametric instability of the partial Gaussian beam limited by the fiber face area in a graded-index multimode fiber.
Guangye Yang   +14 more
doaj   +1 more source

Over-Two-Octave Supercontinuum Generation of Light-Carrying Orbital Angular Momentum in Germania-Doped Ring-Core Fiber

open access: yesSensors, 2022
In this paper, we design a silica-cladded Germania-doped ring-core fiber (RCF) that supports orbital angular momentum (OAM) modes. By optimizing the fiber structure parameters, the RCF possesses a near-zero flat dispersion with a total variation of
Jian Yang   +10 more
doaj   +1 more source

Hydrodynamic Supercontinuum

open access: yesPhysical Review Letters, 2013
We report the experimental observation of multi-bound-soliton solutions of the nonlinear Schrodinger equation (NLS) in the context of hydrodynamic surface gravity waves. Higher-order N-soliton solutions with N = 2, 3 are studied in detail and shown to be associated with self-focusing in the wave group dynamics and the generation of a steep localized ...
Chabchoub, A.   +5 more
openaire   +5 more sources

Active Supercontinuum Injection for Optical Parametric Chirped Pulse Amplification

open access: yesIEEE Photonics Journal, 2017
The anticipant supercontinuum is a prerequisite for the pump seed generation in an optical parametric chirped pulse amplification (OPCPA) system. To achieve the anticipant supercontinuum, we develop an active method operated in a two-level control scheme
Jie Mu   +11 more
doaj   +1 more source

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