Results 101 to 110 of about 41,304 (285)

Sub-100-as timing jitter optical pulse trains from mode-locked Er-fiber lasers

, 2011
We demonstrate sub-100-attosecond timing jitter optical pulse trains generated from free-running, 77.6-MHz repetition-rate, mode-locked Er-fiber lasers.
Chang Hee Nam, Chur Kim, Cox, Haus, Hyoji Kim, Jungwon Kim, Kim, Kim, Kwangyun Jung, Namiki, Nicholson, Nugent-Glandorf, Paschotta, Schibli, Song, Song, Tae Keun Kim, Youjian Song   +17 more
core   +1 more source

Indirect Band Edge and Chain‐Locked Linear Dichroism in the Quasi‐1D Van der Waals Antiferromagnet AgCrP2S6

Advanced Functional Materials, EarlyView.
AgCrP2S6 reveals a momentum‐indirect band edge (≈1.35 eV) and chain‐locked linear dichroism: the first direct transitions emerge at 1.6–1.8 eV for E||a. Resonant Raman and photoemission corroborate this assignment. In ACPS/graphene heterostructures, photocurrent turns on above ≈1.5 eV and follows the same polarization selection rules (anisotropy ≈0.53),
Oleksandr Volochanskyi, Sabrina Juergensen, Václav Valeš, Kumari Surbhi, Martin Mergl, Kseniia Mosina, Zdeněk Sofer, Jan Honolka, Patryk Kusch, Martin Kalbáč   +9 more
wiley   +1 more source

Birefringence-Induced Trains of High-Rate Pulses in a Mode-Locked Fiber Laser [PDF]

, 2009
The output of a mode-locked erbium-doped ring fiber laser incorporating a section of a polarization-maintaining (PM) fiber is investigated in both numerical simulations and experiments.
Sendowski, Jacob, Yariv, Amnon, Zadok, Avi   +2 more
core   +1 more source

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

Advanced Functional Materials, EarlyView.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source

Microneedle Technology in Psoriasis Management: Mechanistic Insights, Technological Innovation, Clinical Progress, and Challenges

Advanced Healthcare Materials, EarlyView.
This review explores the evolving role of microneedle systems in psoriasis management, highlighting their potential for enhanced drug delivery, diagnosis, and disease monitoring. It also discusses unmet clinical needs for psoriasis management and technical challenges, while outlining strategic directions to advance microneedle integration into routine ...
Fatma Moawad, Yasmine Ruel, Roxane Pouliot, Davide Brambilla   +3 more
wiley   +1 more source

A High-Energy, Wide-Spectrum, Spatiotemporal Mode-Locked Fiber Laser

Micromachines
In this article, we demonstrate a high-energy, wide-spectrum, spatiotemporal mode-locked (STML) fiber laser. Unlike traditional single-mode fiber lasers, STML fiber lasers theoretically enable mode-locking with various combinations of transverse modes ...
Boyuan Ge, Yajun Lou, Silin Guo, Yue Cai, Xinhai Zhang   +4 more
doaj   +1 more source

Phase-locked arrays of unstable resonator semiconductor lasers [PDF]

, 1986
A phase-locked array of several unstable resonator semiconductor lasers is demonstrated.
Salzman, J., Yariv, A.
core   +1 more source

Mode-locked waveguide polariton laser

Optica
So far, exciton-polariton (polariton) lasers were mostly single-mode lasers based on microcavities. Despite the large repulsive polariton-polariton interaction, a pulsed mode-locked polariton laser was never, to our knowledge, reported. Here, we use a 60-µm-long GaN-based waveguide surrounded by distributed Bragg reflectors forming a multi-mode ...
Souissi, Hassen, Gromovyi, Maksym, Septembre, Ismaël, Develay, Valentin, Brimont, Christelle, Doyennette, Laetitia, Cambril, Edmond, Bouchoule, Sophie, Alloing, Blandine, Frayssinet, Éric, Zúñiga-Pérez, Jesus, Ackemann, Thorsten, Malpuech, Guillaume, Solnyshkov, Dmitry, Guillet, Thierry   +14 more
openaire   +3 more sources

Highly Tunable and Cell‐Remodelable Thiol‐ene Alginate‐Peptide Crosslinked Hydrogels to Recreate Cellular and Organoid Microenvironments for Biofabrication

Advanced Healthcare Materials, EarlyView.
Norbornene‐functionalized alginate is crosslinked with a di‐thiolated peptide sequence cleavable by cell‐secreted matrix metalloproteinases and decorated with cell‐adhesion peptides upon exposure to UV. Thyroid follicles, endometrial and intestinal organoids are encapsulated in a gentle manner with high cell viability and correct phenotype ...
Julia Fernández‐Pérez, Adrián Seijas‐Gamardo, Antonio J. Feliciano, Panagiota Kakni, Anna M. Kip, Paul Wieringa, Stefan Giselbrecht, Matthew B. Baker, Lorenzo Moroni   +8 more
wiley   +1 more source

Review of low timing jitter mode-locked fiber lasers and applications in dual-comb absolute distance measurement

Nanotechnology and Precision Engineering, 2018
Passively mode-locked fiber lasers emit femtosecond pulse trains with excellent short-term stability. The quantum-limited timing jitter of a free running femtosecond erbium-doped fiber laser working at room temperature is considerably below one ...
Haosen Shi, Youjian Song, Runmin Li, Yuepeng Li, Hui Cao, Haochen Tian, Bowen Liu, Lu Chai, Minglie Hu   +8 more
doaj   +1 more source