Results 101 to 110 of about 41,186 (295)

Ultrafast Electrically Pumped VECSELs

IEEE Photonics Journal, 2013
We present an improved design for electrically pumped vertical external-cavity surface-emitting lasers (EP-VECSELs) optimized for passive modelocking with a semiconductor saturable absorber mirror (SESAM).
W. P. Pallmann, C. A. Zaugg, M. Mangold, I. Dahhan, M. Golling, B. W. Tilma, B. Witzigmann, U. Keller   +7 more
doaj   +1 more source

Precision Layered Stealth Dicing of SiC Wafers by Ultrafast Lasers. [PDF]

Micromachines (Basel), 2022
Yang B, Wang H, Peng S, Cao Q.
europepmc   +1 more source

High-brightness switchable multi-wavelength remote laser in air

, 2011
Remote laser in air based on amplified spontaneous emission (ASE) has produced rather well-collimated coherent beams in both backward and forward propagation directions, opening up possibilities for new remote sensing approaches.
A. Becker, Bin Zeng, Guihua Li, Haisu Zhang, Huailiang Xu, J. Kasparian, Jielei Ni, Jinping Yao, See Leang Chin, Wei Chu, Ya Cheng, Zhizhan Xu   +11 more
core   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Laser-driven few-cycle terahertz sources with high average power [PDF]

APL Photonics
Ultrafast laser-driven terahertz sources are gaining in popularity in an increasingly wide range of scientific and technological applications. However, many fields continue to be severely limited by the typically low average power of these sources, which
Robin Löscher, Tim Vogel, Samira Mansourzadeh, Mohsen Khalili, Alan Omar, Yicheng Wang, Martin Hoffmann, Clara J. Saraceno   +7 more
doaj   +1 more source

Superionic states formation in group III oxides irradiated with ultrafast lasers. [PDF]

Sci Rep, 2022
Voronkov RA, Medvedev N, Volkov AE.
europepmc   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Generation of 110-W sub-100-fs Pulses at 100 MHz by Nonlinear Amplification Based on Multicore Photonic Crystal Fiber

IEEE Photonics Journal, 2016
We report a multicore photonic crystal fiber (PCF) amplification system delivering about 110-W laser pulses with a duration of sub-100 fs. This amplifier is seeded by a large mode area (LMA) PCF mode-locked oscillator with a repetition rate of 100 MHz ...
Li-li Huang, Ming-lie Hu, Xiao-hui Fang, Bo-wen Liu, Lu Chai, Ching-yue Wang   +5 more
doaj   +1 more source

Recent Developments of Quantum Dot Materials for High Speed and Ultrafast Lasers. [PDF]

Nanomaterials (Basel), 2022
Yao Z, Jiang C, Wang X, Chen H, Wang H, Qin L, Zhang Z.   +6 more
europepmc   +1 more source

Ultrafast waveguide lasers

, 2014
Mode-locked lasers with repetition-rates in excess of 1 GHz have many applications in areas such as optical sampling, non-linear microscopy, and optical frequency metrology. To date there have been very few demonstrations of such high repetition-rate lasers with sub-picosecond operation and high average power.
openaire   +2 more sources