Results 51 to 60 of about 138,810 (343)

Effect of Lower-Level Relaxation on the Pulse Generation Performance of Q-Switched Nd:YAG Laser

Photonics
When analyzing and designing Q-switched Nd:YAG lasers, the impact of lower-energy-level relaxation on the pulse waveform is often ignored. This approximation typically does not result in significant deviations when the laser pulse duration is much longer
Fuqiang Ma, Shiyu Wang, Bingbin Li, Peijin Shang, Jinyou Li, Zheyuan Li   +5 more
doaj   +1 more source

Surfactant-aided exfoliation of molydenum disulphide for ultrafast pulse generation through edge-state saturable absorption

, 2015
We use liquid phase exfoliation to produce dispersions of molybdenum disulphide (MoS2) nanoflakes in aqueous surfactant solutions. The chemical structures of the bile salt surfactants play a crucial role in the exfoliation and stabilization of MoS2.
Hasan, Tawfique, Howe, Richard C. T., Hu, Guohua, Kelleher, Edmund J. R., Woodward, Robert I., Yang, Zongyin   +5 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Yttrium oxide as a Q-switcher for the near-infrared erbium-doped fiber laser

Nanophotonics, 2020
Yttrium oxide (Y2O3) has been widely used in metal-reinforced composites, microelectronics, waveguide lasers, and high-temperature protective coatings because of its good physical and photoelectric properties.
Liu Mengli, Liu Wenjun, Liu Ximei, Ouyang Yuyi, Hou Huanran, Lei Ming, Wei Zhiyi   +6 more
doaj   +1 more source

A 1625 nm Q‐Switched All‐Fiber Laser

Advanced Photonics Research, 2022
A Q‐switched all‐fiber Er‐doped laser operated at a wavelength up to 1625 nm is proposed and demonstrated. A self‐developed, element hybridization (Al, Ge, La, P, and Er in the core, Si and P in the cladding region) glass fiber with gain extended to U ...
Huihui Cheng, Xiaoyi Huang, Min Jiang, Jiahua Yang, Liting Lin, Ting Li, Zhiping Cai, Shifeng Zhou   +7 more
doaj   +1 more source

Continuous-Wave Nd:YVO4 self-Raman lasers operating at 1109nm, 1158nm and 1231nm [PDF]

, 2013
Several continuous-wave Nd:YVO4 self-Raman lasers based on the primary and secondary Raman transitions of YVO4 (893cm−1 and 379cm−1 respectively) are reported in this paper.
Bauer, Ralf, Li, Ran, Lubeigt, Walter
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

High-Repetition-Rate Q-Switched Holmium Fiber Laser

IEEE Photonics Journal, 2012
Pulses of 118 nJ at the repetition rate of 170 kHz and central wavelength of 2097 nm have been produced by holmium fiber laser Q-switched by carbon nanotube saturable absorber.
A. Yu. Chamorovskiy, A. V. Marakulin, A. S. Kurkov, T. Leinonen, O. G. Okhotnikov   +4 more
doaj   +1 more source

Double tungstate lasers: From bulk toward on-chip integrated waveguide devices [PDF]

, 2007
It has been recognized that the monoclinic double tungstates $KY{(WO_4)}_2$, $KGd{(WO_4)}_2$, and $KLu{(WO_4)}_2$ possess a high potential as rare-earth-ion-doped solid-state laser materials, partly due to the high absorption and emission cross sections ...
Borca, Camelia N., Delfyett, P.J., Gardillou, Florent, Griebner, Uwe, Petrov, Valentin, Pollnau, Markus, Rivier, Simon, Romanyuk, Yaroslav E.   +7 more
core   +2 more sources