Results 81 to 90 of about 2,748 (191)

Attosecond‐Stable Two‐Dimensional Spectroscopy by a Sagnac‐Based Modulating System and a Sub‐4‐fs Continuum Source

Laser &Photonics Reviews, EarlyView.
A novel optical platform integrates a Sagnac‐based interferometer with a high‐brightness multiple‐plate continuum source to advance two‐dimensional electronic spectroscopy. The robust system delivers octave‐spanning, 3.7‐femtosecond pulses and achieves intrinsic attosecond‐level phase stability without active feedback.
Wei‐Chung Feng, Bo‐Han Chen, Chih‐Hsuan Lu, Howe‐Siang Tan, Shang‐Da Yang, Kai Chen   +5 more
wiley   +1 more source

Plasmon–Exciton Coupling Enhances Second‐Order Nonlinear Response in Borophene–ZnO Hybrid Structures

Laser &Photonics Reviews, EarlyView.
Nonlinear interactions between plasmons in borophene and excitons in ZnO lead to enhanced nonlinear and incoherent cathodoluminescence, as well as coherent second harmonic generation, under electron‐beam and laser irradiations, respectively. The anisotropic response of borophene, revealed as in‐plane hyperbolic polariton propagation, acts as a control ...
Maximilian Black, Yaser Abdi, Prabhdeep Singh, Bharti Garg, Zahra Alavi, Mohammadreza Alikhanim, Mohammad Hosein Salemi Seresht, Fatemeh Chahshouri, Masoud Taleb, Nahid Talebi   +9 more
wiley   +1 more source

Heterogeneous Integration of Multi‐Band Mode‐Locked and Single‐Mode Lasers on an Extended Commercial SiN Platform

Laser &Photonics Reviews, EarlyView.
Micro‐transfer printing enables GaAs and InP gain materials to be integrated on a commercial silicon nitride photonic platform. The resulting chip supports O‐ and C‐band comb and single‐mode lasers, demonstrating a scalable route toward multi‐material, multi‐wavelength, and multifunctional integrated light sources.
Dongbo Wang, Tom Reep, Thi Ngoc Lam Tran, Stijn Poelman, Jing Zhang, Jose Carreira, Camiel Op de Beeck, Stijn Cuyvers, Michael Geiselmann, Maximilien Billet, Dries Van Thourhout, Gunther Roelkens, Bart Kuyken   +12 more
wiley   +1 more source

Photochemical fluorescence activation in arrays of microspherical containers

Responsive Materials, EarlyView.
Photoresponsive microdroplets can be produced with precise structural control from organic solutions of a photoactivatable fluorophore and aqueous solutions of a surfactant at a microfluidic cross junction. These dye‐doped microspheres assemble spontaneously in close‐packed arrays in aqueous media.
William M. Piedra, Andrea Tomassini, Keiran I. Singh, Stephen A. Lee, Françisco M. Raymo   +4 more
wiley   +1 more source

Laser‐Synthesized Carbon‐Coated Elemental Bismuth Nanoparticles for Sustained Reactive Oxygen Species Generation Under Visible‐Light Irradiation

Small, EarlyView.
Femtosecond laser ablation of bismuth in acetone yields carbon‐coated nanoparticles with a metallic Bi0 core and an amorphous carbon shell. The core‐shell architecture preserves visible‐light‐driven redox activity and enables sustained hydroxyl‐radical generation.
Pavel Bezrukov, Sravan Sangeeth Surendran, Andrey Machnev, Andrei Pastukhov, Alexander Gumennik, Andrei Kabashin, Pavel Ginzburg   +6 more
wiley   +1 more source

Manipulating the Propagation of Solitons with Solid-Core Photonic Bandgap Fibers

International Journal of Optics, 2012
We review the dynamics of soliton self-frequency shift induced by Raman gain in special solid-core photonic bandgap fibers and its consequences in terms of supercontinuum generation.
O. Vanvincq, A. Kudlinski, A. Bétourné, A. Mussot, Y. Quiquempois, G. Bouwmans   +5 more
doaj   +1 more source

Engineering Carbon Nanotube Quantum Well Defects With Recognition Tripeptides for Optical Detection of Extracellular Vesicles in Plasma

Small, EarlyView.
A three‐residue peptide bioconjugated onto a carbon nanotube quantum defect turns the near‐infrared emission of quantum defects into a reporter of integrins on intact extracellular vesicles, directly in human plasma. The sensor reveals that healthy fibroblast vesicles carry as much RGD‐binding integrin as cancer‐derived ones, an adhesion‐associated ...
In‐Jun Hwang, Junhee Kim, Aarti Patel, Leilei Zhang, Jacob Miller, Stanislav Piletsky, Cassandra L. Clift, Colin Hisey, YongJoo Kim, Mijin Kim   +9 more
wiley   +1 more source

Supercontinuum generation as a signal amplifier

Optica, 2015
Supercontinuum white-light generation in optical fibers is a process that is known for its extreme sensitivity toward fluctuations of the input pulses, giving rise to a strong amplification of input noise. Such noise amplification has been recognized as a detrimental effect that prevents compression of the broad white-light spectra into a few-cycle ...
Genty Goëry, Steinmeyer Günter, Sand Johan, Orsila Lasse, Närhi Mikko   +4 more
openaire   +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

Description of Dispersive Wave Emission and Supercontinuum Generation in Silicon Waveguides Using Split-Step Fourier and Runge-Kutta Integration Methods

Advances in Mathematical Physics, 2014
Based on solving numerically the generalized nonlinear Schrödinger equation describing the propagation of high order femtosecond soliton in silicon waveguide under certain parametric conditions by the split-step Fourier and Runge-Kutta integration ...
Xuefeng Li
doaj   +1 more source