Results 41 to 50 of about 106,389 (298)

Optimizing the spectrum of high power narrow linewidth fiber amplifier through the same complex degree of coherence

Frontiers in Physics, 2022
The spectra of narrow linewidth fiber amplifiers are closely related to both the stimulated Brillouin scattering (SBS) threshold in power scaling process and the combining efficiency in coherent beam combining (CBC) system.
Wenchang Lai, Pengfei Ma, Pengfei Ma, Pengfei Ma, Jiaxin Song, Jiaxin Song, Jiaxin Song, Shuai Ren, Wei Liu, Wei Liu, Wei Liu, Pu Zhou   +11 more
doaj   +1 more source

Fiber amplification of radially and azimuthally polarized laser light [PDF]

, 2010
The results on amplifying either radially or azimuthally polarized light with a fiber amplifier are presented. Experimental results reveal that more than 85% polarization purity can be retained at the output even with 40dB amplification, and that ...
Asher A. Friesem, Fridman, Grosjean, Heckenberg, Kawauchi, Li, Li, Machavariani, Machavariani, Mark Dubinskii, Micha Nixon, Moshe, Moti Fridman, Nesterov, Nir Davidson, Oron, Oron, Venkatakrishnan, Volpe   +18 more
core   +1 more source

Transformation From Conventional Dissipative Solitons to Amplifier Similaritons in All-Normal Dispersion Mode-Locked Fiber Lasers

IEEE Photonics Journal, 2018
We report the numerical demonstration of the transformation from dissipative solitons to amplifier similaritons in an all-normal dispersion ultrafast fiber laser for the first time.
Yueqing Du, Xuewen Shu
doaj   +1 more source

Principal modes in fiber amplifiers [PDF]

Optics Letters, 2011
The dynamics of the state of polarization in single mode and multimode fiber amplifiers are presented. The experimental results reveal that although the state of polarizations at the output can vary over a large range when changing the temperatures of the fiber amplifiers, the variations are significantly reduced when resorting to the principal states ...
Fridman, Moti, Nixon, Micha, Dubinskii, Mark, Friesem, Asher A., Davidson, Nir   +4 more
openaire   +3 more sources

Modeling hepatic fibrosis in TP53 knockout iPSC‐derived human liver organoids

Molecular Oncology, EarlyView.
This study developed iPSC‐derived human liver organoids with TP53 gene knockout to model human liver fibrosis. These organoids showed elevated myofibroblast activation, early disease markers, and advanced fibrotic hallmarks. The use of profibrotic differentiation medium further amplified the fibrotic signature seen in the organoids.
Mustafa Karabicici, Soheil Akbari, Ceyda Caliskan, Canan Celiker, Ozden Oz, Leman Binokay, Gökhan Karakulah, Serif Senturk, Esra Erdal   +8 more
wiley   +1 more source

Widely Tunable Pulse Duration 100 mJ Single-Mode MOPA System Based on Yb-Doped Tapered Double-Clad Fiber and Nd:YAG Solid-State Amplifiers

Photonics
We report on a 1064 nm master oscillator power amplifier (MOPA) system based on pulse-modulated laser diode seed sources combined with fiber preamplifiers and a Yb-doped tapered double-clad fiber (T-DCF) amplifier used as an all-fiber master oscillator ...
Mikhail Kozlyakov, Andrey Petrov, Grigoriy Mikhailovskiy   +2 more
doaj   +1 more source

Neural network modeling of bismuth-doped fiber amplifier

Journal of the European Optical Society-Rapid Publications, 2023
Bismuth-doped fiber amplifiers offer an attractive solution for meeting continuously growing enormous demand on the bandwidth of modern communication systems.
Donodin Aleksandr, de Moura Uiara Celine, Brusin Ann Margareth Rosa, Manuylovich Egor, Dvoyrin Vladislav, Da Ros Francesco, Carena Andrea, Forysiak Wladek, Zibar Darko, Turitsyn Sergei K.   +9 more
doaj   +1 more source

Coherent beam combining with multilevel optical phase-locked loops [PDF]

, 2007
Coherent beam combining (CBC) technology holds the promise of enabling laser systems with very high power and near-ideal beam quality. We propose and demonstrate a novel servo system composed of multilevel optical phase lock loops.
Aflatouni, Firooz, Hashemi, Hossein, Kewitsch, Anthony, Liang, Wei, Rakuljic, George, Satyan, Naresh, Yariv, Amnon   +6 more
core   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

Molecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken, Maartje Witsen, Emile E. Voest, Krijn K. Dijkstra   +3 more
wiley   +1 more source

Experimental study on the 500-W-level all-fiber amplifier operating near 980 nm

Results in Physics, 2021
In this paper, a 500-W-level all-fiber amplifier operating near 980 nm is demonstrated firstly, to the best of our knowledge. The amplifier is fabricated with a 105/250-μm core/cladding-diameter double-cladding Yb-doped fiber (DCYF).
Maoni Chen, Jianqiu Cao, Aimin Liu, Zhihe Huang, Zhiyong Pan, Zilun Chen, Jinbao Chen   +6 more
doaj   +1 more source