Results 61 to 70 of about 618,573 (283)

Fabrication and Performance of a Heterogeneous-Helical-Cladding Fiber

IEEE Photonics Journal, 2021
Large mode area (LMA) fibers are widely used in high power fiber lasers to solve the nonlinear problems. In this work, a Nd3+-doped phosphate glass LMA fiber with heterogeneous helical claddings (HHC) is fabricated successfully by rod in tube ...
Xiao Shen, Zijun Yang, Sheng Chen, Guangli Yang, Liaolin Zhang, Wei Wei   +5 more
doaj   +1 more source

Hybrid Ytterbium-doped large-mode-area photonic crystal fiber amplifier for long wavelengths. [PDF]

, 2012
A large-mode-area Ytterbium-doped photonic crystal fiber amplifier with build-in gain shaping is presented. The fiber cladding consists of a hexagonal lattice of air holes, where three rows are replaced with circular high-index inclusions.
Alkeskjold, Argyros, Boyer, Cerqueira S, Cucinotta, Enrico Coscelli, Federica Poli, Goto, Jansen, Jes Broeng, Jesper Lægsgaard, Limpert, Marko Laurila, Mette M. Jørgensen, Nicholson, Saito, Shirakawa, Sidsel R. Petersen, Thomas T. Alkeskjold, Wielandy   +19 more
core   +2 more sources

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

Characteristics and Laser Performance of Yb3+-Doped Silica Large Mode Area Fibers Prepared by Sol–Gel Method

Fibers, 2013
Large-size 0.1 Yb2O3–1.0 Al2O3–98.9 SiO2 (mol%) core glass was prepared by the sol–gel method. Its optical properties were evaluated. Both large mode area double cladding fiber (LMA DCF) with core diameter of 48 µm and large mode area photonic crystal ...
Shikai Wang, Fengguang Lou, Meng Wang, Chunlei Yu, Suya Feng, Qinling Zhou, Danping Chen, Lili Hu   +7 more
doaj   +1 more source

Al₂O₃/GeO₂/P₂O₅/F-Doped Silica Large-Mode-Area Optical Fibers for High-Power Single-Frequency Radiation Delivery

Photonics, 2023
A new design of a passive optical fiber waveguide with a large mode area (LMA) and strong stimulated Brillouin scattering (SBS) suppression is proposed. The fiber core consists of two parts: a central one, doped with Al2O3 and GeO2, and a peripheral one,
Sergey Tsvetkov, Alexey Lobanov, Denis Lipatov, Maxim Khudyakov, Tatiana Zaushitsyna, Liudmila Iskhakova, Leonid Kotov, Mikhail Likhachev   +7 more
doaj   +1 more source

Efficient harmonic generation with large-mode-area fiber sources

Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178), 1998
We present the results of a series of experiments using doped fiber sources in which we have, to the best of our knowledge, demonstrated the highest ever pulse energies from a Q-switched fiber laser (180 /spl mu/J), the high second-harmonic conversion efficiency from a single pass in PPLN (periodically poled LiNbO/sub 3/) (83%), and the first ...
Britton, P.E., Richardson, D.J., Taverner, D., Smith, P.G.R., Ross, G.W., Hanna, D.C.   +5 more
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

A Detailed Study of a Resonant-Assisted Segmented Cladding Fiber for Large Mode Area Applications

Photonics
In this work, we have proposed and optimized a large mode area segmented cladding fiber (SCF) with an unconventional low-index segment cladding. The low-refractive-index cladding proposed in this paper consists of three parts.
Minmin Xue, Hao Qin, Suwen Li, Yuqi Hao, Libo Yuan   +4 more
doaj   +1 more source

Large mode area fibers with asymmetric bend compensation

Optics Express, 2011
Fibers with asymmetrical bend compensation offer to completely remove the tradeoff between mode area and single-modedness, with potentially huge impact on high-power amplification. These fibers would be difficult to fabricate, but are the only fundamental-mode strategy that can remove the bend-distortion limitations on mode-area scaling.
openaire   +2 more sources

Large mode area fiber lasers and their applications [PDF]

Advanced Solid State Lasers, 2000
The area of fiber lasers has undergone rapid developments in recent years. Gone are the days when fiber lasers were seen as something of an irrelevant curiosity, offering interesting performance features, but always with power levels or other performance limitations, that made them unsuitable for all but a few applications.
Richardson, D.J., Offerhaus, H.L., Broderick, N.G.R.   +2 more
openaire   +2 more sources