Results 51 to 60 of about 49,221 (298)

Study of millimeter wave phase shift in 40 GHz hybrid mode locked lasers [PDF]

, 2009
An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core   +1 more source

Cylindrical zoom optics for high-power diode lasers

, 2022
S.185-192Today's high power diode lasers achieve spots with dimensions of approximately 1 mm square, delivering intensities breaching 105 W/cm2 and power levels of up to 4 kW.
Ehlers, B., Heinemann, S., Walz, U.
core   +1 more source

1.5 μm Solid-state Lasers with Diode Pumping [PDF]

Журнал нано- та електронної фізики, 2017
More robust 1.5 μm compact lasers are found. The results of experimental studies of the conditions of generation of the pulse laser with KGW:Nd3 +crystal with transverse pumping are presented.
Y.P. Machekhin, I.V. Beznosenko
doaj   +1 more source

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

Advanced 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, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Bio-optimized energy transfer in densely packed fluorescent protein enables near-maximal luminescence and solid-state lasers

, 2014
This work was supported by the US National Science Foundation (ECCS- 1101947), National Institutes of Health (P41EB015903, R21EB013761), Department of Defense (FA9550-11-1-0331), and the Korea National Research Foundation (R31-2008-000-10071-0).
Gather, Malte Christian, Yun, Seok Hyun
core   +1 more source

Chip-scale high-peak-power semiconductor/solid-state vertically integrated laser

Nature Communications, 2022
Here the authors demonstrate chip-scale high-peak-power lasers by vertical integration of semiconductor and solid state laser gain mediums to reach the same maturity level as existing semiconductor lasers, which are suitable for miniaturization and cost ...
Jianglin Yue, Kenji Tanaka, Go Hirano, Gen Yonezawa, Misaki Shimizu, Yasunobu Iwakoshi, Hiroshi Tobita, Rintaro Koda, Yasutaka Higa, Hideki Watanabe, Katsunori Yanashima, Masanao Kamata   +11 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Power Scaling of Solid State Lasers [PDF]

EPJ Web of Conferences, 2022
Tünnermann A.
doaj   +1 more source

Recent progress in continuously tunable low-noise all-solid-state single-frequency continuous-wave laser based on intracavity locked etalon

Frontiers in Physics, 2022
All-solid-state single-frequency continuous-wave (CW) lasers have been applied in many fields of scientific research owing to their intrinsic advantages of high beam quality, low noise, narrow linewidth, and high coherence.
Pixian Jin, Pixian Jin, Jiao Wei , Jiao Wei , Jing Su , Jing Su , Huadong Lu, Huadong Lu, Kunchi Peng , Kunchi Peng    +9 more
doaj   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source