Results 101 to 110 of about 12,890 (241)

Supercontinuum generation in a photonic fiber and bulk materials

, 2020
Bakalářská práce se zabývá nelineární odezvou optických materiálů při dopadu vysoce výkonného laserového záření. Pozornost byla věnována nelineárnímu jevu zvanému generace superkontinua, jenž vede k výraznému rozšíření frekvenčního pásma vstupujícího ...
Tauchmanová, Martina
core   +1 more source

In vivo differentiation of scarring alopecia using line‐field confocal optical coherence tomography: a pilot study

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background and Objectives: Diagnosing cicatricial alopecia is challenging. Even with histology, a definitive diagnosis cannot always be made. Line‐field confocal optical coherence tomography (LC‐OCT), a non‐invasive imaging method with high resolution used in vivo, has proven helpful in diagnosing scarring alopecia.
Marie‐Christine Nutz, Julia Welzel, Daniela Hartmann, Lars E. French, Maximilian Deußing, Elke C. Sattler   +5 more
wiley   +1 more source

Hyperspectral tomographic diffractive microscopy: Development and applications

Journal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori, Carlos Alberto Chacón Ávila, Matthieu Debailleul, Nicolas Verrier, Olivier Haeberlé   +4 more
wiley   +1 more source

Supercontinuum generation and beatnote detection using ultrafast VECSEL seed oscillators

, 2018
We present preliminary results showing the potential of VECSEL technology for the generation of high power coherent supercontinuum. Among these results, we demonstrate a stable output power of 16 W with a pulse duration of 71 fs and a repetition rate of ...
Robert Rockmore, Tsung-Han Wu, Alexandre Laurain, Moloney, Jerome V., Baker, Caleb W., R. Jason Jones, Rockmore, Robert, Wu, Tsung-Han, Jones, R. Jason, Laurain, Alexandre, Caleb W. Baker, Jerome V. Moloney   +11 more
core   +1 more source

Near-diffraction-limited supercontinuum generation in a cladding-pumped nonlinear fiber converter

Through nonlinear scattering including stimulated Raman scattering and beam cleanup, a pulsed multimode pump beam is converted into a nearly diffraction-limited supercontinuum extending from 1 to 2 µm in a passive cladding-pumped nonlinear fiber ...
Nilsson, J., Ji, J., Codemard, C.A., Webb, A.S., Sahu, J.K.   +4 more
core   +1 more source

A validated deep learning workflow for 3D quantification of amyloid plaques in cleared mouse brain

Journal of Microscopy, EarlyView.
Abstract Accurate quantification of amyloid plaque pathology is essential for understanding Alzheimer's disease (AD) progression and evaluating therapeutic interventions. Yet, conventional histology relies on sampling thin tissue sections and therefore incompletely captures three‐dimensional (3D) plaque distributions, introducing bias and limiting ...
Veronika Valova, Louise Cole, Neftali Flores Rodriguez, Filip Braet, Daniel M. Johnstone, Richard Harwood   +5 more
wiley   +1 more source

Mid-IR coherent supercontinuum generation in all-solid step-index soft glass fibers

We numerically demonstrate that normal dispersion femtosecond pumping of tailored soft glass step-index fibers can generate highly coherent mid-IR supercontinuum light with two octaves bandwidth, suitable for recompression to few-cycle pulse ...
Heidt, A.M., Price, J.H.V., Richardson, D.J., Poletti, F.   +3 more
core   +1 more source

Extrinsic Limitations of Stealthy Hyperuniform Devices

Advanced Optical Materials, Volume 14, Issue 37, 9 October 2026.
Stealthy hyperuniform devices exhibit a scattering‐free angular region whose extent follows a simple quenching equation. Experimental measurements confirm this prediction but reveal quenching efficiencies far below theoretical expectations. Multiple scattering and finite‐size effects are quantified, establishing realistic performance limits for ...
Yuhao Xu, Miao Chen, Louis Forestier, Franck Carcenac, Laurent Mazenq, Philippe Lalanne   +5 more
wiley   +1 more source

Supercontinuum generation in scintillator crystals

Scientific Reports
AbstractWe present a comparative experimental study of supercontinuum generation in undoped scintillator crystals: bismuth germanate (BGO), yttrium orthosilicate (YSO), lutetium oxyorthosilicate (LSO), lutetium yttrium oxyorthosilicate (LYSO) and gadolinium gallium garnet (GGG), pumped by 180 fs fundamental harmonic pulses of an amplified Yb:KGW laser.
Marčiulionytė, Vaida, Tamošauskas, Gintaras, Šutovas, Matas, Dubietis, Audrius   +3 more
openaire   +4 more sources

Investigation of nonlinear processes and device designs applicable to the creation of a compact, broadly tunable laser based on a tantalum pentoxide planar lightwave circuit platform

, 2010
Nonlinear photonic devices utilize phase-matched parametric wavelength conversion in a nonlinear medium to create a widely tunable pulsed laser source. Currently most of nonlinear lasers are based on bulk optics or photonic fibres.
Chen, Ruiqi
core   +1 more source