Results 31 to 40 of about 12,641 (308)

Ultra-Short Pulse Generation at 914 nm from a CW laser source [PDF]

open access: yesEPJ Web of Conferences
We present an all-PM fiber laser system seeded by a single-frequency CW laser source generating 230fs pulses at 914nm with a tunable repetition rate between 5 and 20 MHz.
Florentin Raphaël   +8 more
doaj   +1 more source

Table-top optical parametric chirped pulse amplifiers: past and present

open access: yesOpto-Electronic Advances, 2023
The generation of power- and wavelength-scalable few optical cycle pulses remains one of the major challenges in modern laser physics. Over the past decade, the development of table-top optical parametric chirped pulse amplification-based systems was ...
Audrius Dubietis, Aidas Matijošius
doaj   +1 more source

Raman Fiber Laser–Based Amplification in Telecommunications [PDF]

open access: yes, 2018
The chapter demonstrates a detailed study of Raman fiber laser (RFL)-based amplification techniques and their applications in long-haul/unrepeatered coherent transmission systems.
Tan, Mingming, Mingming Tan
core   +1 more source

Tapered amplifier laser with frequency-shifted feedback

open access: yesSciPost Physics, 2016
We present a frequency-shifted feedback (FSF) laser based on a tapered amplifier. The laser operates as a coherent broadband source with up to 370GHz spectral width and 2.3us coherence time.
A. Bayerle, S. Tzanova, P. Vlaar, B. Pasquiou, F. Schreck
doaj   +1 more source

Erbium:ytterbium co-doped large-core fiber laser with 297W continuous-wave output power

open access: yes, 2007
We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) co-doped fiber laser that produces 297 W of continuous-wave output at 1567 nm.
Nilsson, J.   +23 more
core   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Few-cycle Yb-doped laser sources for attosecond science and strong-field physics

open access: yesAPL Photonics
Yb-doped laser amplifiers have, in recent years, found applications in attosecond science, driven largely by the opportunities associated with high-average-power and high-repetition-rate attosecond sources.
Tran-Chau Truong   +4 more
doaj   +1 more source

Compact Aberration-Free Relay-Imaging Multi-Pass Layouts for High-Energy Laser Amplifiers

open access: yesApplied Sciences, 2016
We present the results from a theoretical investigation of laser beam propagation in relay imaging multi-pass layouts, which recently found application in high-energy laser amplifiers.
Jörg Körner   +2 more
doaj   +1 more source

Pulsed laser deposition and characterisation of rare earth doped glass-polymer optical materials [PDF]

open access: yes, 2012
Tellurite glass is well known for its excellent optical properties in the application of optical fiber and planar waveguide devices, particularly for optical amplifiers. This thesis is focused on the design, fabrication and characterisation of tellurite
Zhao, Zhanxiang
core  

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

open access: yesMolecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska   +13 more
wiley   +1 more source

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