Results 101 to 110 of about 208,947 (326)

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Hybrid distributed Raman/EDFA amplifier with hybrid automatic gain control for reconfigurable WDM optical networks

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
Nowadays, optical amplifiers designs are induced by new requirements generated by optical networks. The introduction of WDM reconfigurable networks with increasing rate from 10-40 Gb/s to 100 Gb/s and beyond, demand new optical amplifiers development ...
Juliano R. F. Oliveira   +3 more
doaj   +1 more source

91.1 kW, 5.3 ns compact mid-infrared optical parametric amplification based on PPMgLN

open access: yesResults in Physics, 2019
We report a compact mid-infrared optical parametric oscillator (OPO) seeded optical parametric amplifier (OPA) based on PPMgLN. The pump for the OPO and OPA is a split 1064 nm electro-optical Q-switched Nd:YAG laser with a pulse width of 11.7 ns and a ...
Liwei Xu, Yingyi Li, Youlun Ju
doaj   +1 more source

Switchable Ultra-Wideband All-Optical Quantum Dot Reflective Semiconductor Optical Amplifier. [PDF]

open access: yesNanomaterials (Basel), 2023
Nahaei FS   +4 more
europepmc   +1 more source

Effective amplifier noise for an optical receiver based on linear mode avalanche photodiodes [PDF]

open access: yes
The rms noise charge induced by the amplifier for an optical receiver based on the linear-mode avalanche photodiode (APD) was analyzed. It is shown that for an amplifier with a 1-pF capacitor and a noise temperature of 100 K, the rms noise charge due to ...
Chen, C.-C.
core   +1 more source

Micropleated Nanofibrous Filters for High‐Efficiency Submicron Aerosol Filtration: A Comparative Study with Chemical, Biological, Radiological, and Nuclear Gas Mask Filters

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents micropleated filters manufactured by needleless electrospinning. Nanofibers are deposited onto uniaxially pre‐stretched substrates that contract upon release, forming densely packed micropleats. This architecture increases effective surface area without enlarging the filter size, achieving quality factors comparable to those of ...
Aleksandr Fadeev   +6 more
wiley   +1 more source

Injection seeded, diode pumped regenerative ring Nd:YAG amplifier for spaceborne laser ranging technology development [PDF]

open access: yes
A small, all solid state, regenerative ring amplifier designed as a prototype for space application is discussed. Novel features include dual side pumping of the Nd:YAG crystal and a triangular ring cavity design which minimizes the number of optical ...
Coyle, D. Barry   +4 more
core   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

open access: yesAdvanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart   +3 more
wiley   +1 more source

Coherent-state discrimination via non-heralded probabilistic amplification

open access: yes, 2016
A scheme for the detection of low-intensity optical coherent signals was studied which uses a probabilistic amplifier operated in the non-heralded version, as the underlying non-linear operation to improve the detection efficiency.
Giovannetti, Vittorio   +2 more
core   +1 more source

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