Results 101 to 110 of about 14,795 (254)

Laser cladding with powder

, 1998
This thesis is directed to laser cladding with powder and a CO2 laser as heat source. The laser beam intensity profile turned out to be an important pa6 Summary rameter in laser cladding. A numerical model was developed that allows the prediction of the surface temperature distribution that is attained with an arbitrarily shaped intensity profile ...
Schneider, M.F., Schneider, Marcel Fredrik   +1 more
openaire   +1 more source

Theory of Supercritical Coupling and Generalized Bound States in the Continuum

Laser &Photonics Reviews, EarlyView.
We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri, Bruno Miranda, Silvia Romano, Gianluigi Zito   +3 more
wiley   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, EarlyView.
Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Fatigue Strength Analysis of a Cladded Steel Subjected to Tensile Predeformation

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 7, Page 2767-2779, July 2026.
ABSTRACT Cladded steels are a subset of layered metal composites in which a thin functional layer is bonded to a dissimilar substrate, thereby integrating the benefits of both constituent materials. However, the resulting heterogeneous properties of such layered metal composites collectively complicate deformation and fatigue behavior, making reliable ...
Marcel Krochmal, Thomas Wegener, Thomas Niendorf   +2 more
wiley   +1 more source

Analysis and Prediction of Melt Pool Geometry in Rectangular Spot Laser Cladding Based on Ant Colony Optimization–Support Vector Regression

Micromachines
The rectangular spot laser cladding system, due to its large spot size and high efficiency, has been widely applied in laser cladding equipment, significantly improving cladding’s efficiency.
Junhua Wang, Jiameng Wang, Xiaoqin Zha, Yan Lu, Kun Li, Junfei Xu, Tancheng Xie   +6 more
doaj   +1 more source

Efficient fiber-laser pumped Ho:LuLiF₄ laser

We present results for an efficient Ho:LuLiF4 laser in-band pumped by a cladding-pumped Tm-doped silica fiber laser. The polarized, tunable Tm-doped silica fiber-laser operates at 1938 nm, ideally suited for in-band pumping the 40 mm long weakly-doped (0.
Veronesi, S., Parisi, D., Clarkson, W.A., Tonelli, M., Kim, J.W., Mackenzie, J.I.   +5 more
core   +1 more source

977-nm all-fiber DFB laser

, 2004
Three-level operation of a fiber distributed feedback (DFB) laser operating around 980nm is demonstrated for the first time. The ytterbium-doped DFB laser shows a maximum slope efficiency of 61% and output power of 38.2mW under a launched single-mode ...
Fu, L.B., Ibsen, M., Richardson, D.J., Payne, D.N.   +3 more
core   +1 more source

Proton‐Radiation Hardening of High‐Speed Ge/Si Integrated Photodetectors for Space Applications

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Hydrogen loading is demonstrated as a radiation‐hardening strategy for high‐speed Ge/Si integrated photodetectors under broadband proton irradiation. By suppressing irradiation‐induced leakage‐current growth and mitigating bandwidth degradation, hydrogen‐loaded devices maintain high‐speed operation and improved stability, providing a practical route ...
Junguo Xu, Yingying Zhong, Xiongping Bao, Junfeng Chen, Wenjie Peng, Haotian Hu, Yiti Xiong, Weiye Xia, Xiao Chen, Meisong Liao, Jianhui Bin, Yuchen Wang, Libing Zhou, Weibiao Chen   +13 more
wiley   +1 more source

Record Index–Bandgap Trade‐Off: CdPS3 as a High‐Index van der Waals Platform for Ultraviolet–Visible Nanophotonics

Nanophotonics, Volume 15, Issue 11, 13 June 2026.
The fundamental index–bandgap trade‐off strictly limits materials for short‐wavelength nanophotonics. The van der Waals crystal CdPS3 emerges as a compelling alternative platform challenging this paradigm. Combining an exceptionally high refractive index approaching 3 with a broad mid‐infrared‐to‐ultraviolet transparency window, CdPS3 unlocks new ...
Maksim R. Povolotskiy, Aleksandr S. Slavich, Georgy A. Ermolaev, Dmitriy V. Grudinin, Nikolay V. Pak, Ilya A. Zavidovskiy, Konstantin V. Kravtsov, Anton A. Minnekhanov, Mikhail K. Tatmyshevskiy, Alexander V. Syuy, Dmitry I. Yakubovsky, Arslan Mazitov, Liudmila A. Klimova, Adilet N. Toksumakov, Alexander V. Melentev, Elena Zhukova, Davit A. Ghazaryan, Gleb Tselikov, Ivan Kruglov, Sergey M. Novikov, Andrey A. Vyshnevyy, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +23 more
wiley   +1 more source

3000W CW diode laser cladding system

, 2012
Laser cladding has become a useful tool in material processing for improving the surface properties of the substrate material, and has been widely used in industry in recent years. In this paper, we studied the 3000W CW laser cladding system based on the
Lingling Xiong, Zhenfu Wang, Xingsheng Liu, Pu Zhang, Di Wu, Min Wang, Xiaobiao Wang, Yanfang Zheng, Xiaoning Li   +8 more
core   +1 more source