Results 81 to 90 of about 1,961,575 (288)

Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

, 2018
The formation and properties of laser-induced periodic surface structures (LIPSS) were investigated on carbon fibers under irradiation of fs-laser pulses characterized by a pulse duration $\tau$ = 300 fs and a laser wavelength $\lambda$ = 1025 nm.
Boehm, Anne V., Bonse, Jörn, Büttner, Tobias N., Gnecco, Enrico, Gräf, Stephan, Kunz, Clemens, Müller, Frank A., Naumann, Björn, Neumann, Christof, Turchanin, Andrey   +9 more
core   +1 more source

Materials processing with tightly focused femtosecond vortex laser beams

, 2010
This letter is the first demonstration of material modification using tightly focused femtosecond laser vortex beams. Double-charge femtosecond vortices were synthesized with the polarization-singularity beam converter described in Ref [1] and then ...
Andrei V. Rode, Ben-Yakar, Cyril Hnatovsky, Gamaly, Iketaki, Ling-Ling, Picón, Shvedov, Tokizane, Vladlen G. Shvedov, Volyar, Wieslaw Krolikowski   +11 more
core   +2 more sources

Amplitude to phase conversion of InGaAs pin photo-diodes for femtosecond lasers microwave signal generation

, 2011
When a photo-diode is illuminated by a pulse train from a femtosecond laser, it generates microwaves components at the harmonics of the repetition rate within its bandwidth.
A. Bartels, A. Joshi, A.D. Ludlow, B. Lorbeer, D. Kuhl, D.R. Leibrandt, E.N. Ivanov, E.N. Ivanov, G. Santarelli, J. Kim, J. Kim, J. Kim, J. Millo, J. Millo, J. Millo, J. Taylor, J.J. McFerran, K. Wu, K.J. Williams, M. Dentan, M. Lours, M.A. Preciato, M.S. Kirchner, R. Holzwarth, S. Min, S. Seidelin, S. Weyers, S.A. Webster, T. Li, T. Steinmetz, T.M. Fortier, T.M. Ramond, W. Zhang, W. Zhang, W. Zhang, Y. Le Coq, Y.Y. Jiang   +36 more
core   +2 more sources

Three-dimensional femtosecond laser processing for lab-on-a-chip applications

, 2018
The extremely high peak intensity associated with ultrashort pulse width of femtosecond laser allows us to induce nonlinear interaction such as multiphoton absorption and tunneling ionization with materials that are transparent to the laser wavelength ...
F. Sima, K. Sugioka, R. Vázquez, R. Osellame, L. Kelemen, P. Ormos   +5 more
semanticscholar   +1 more source

CW laser damage of ceramics induced by air filament

Opto-Electronic Advances
Combined pulsed laser (CPL), introduced in 1975 for target damage, integrates different lasers to achieve high peak power and pulse energy. However, despite decades of research, CPL remains unused for long-range target damage due to the challenge of ...
Chuan Guo, Kai Li, Zelin Liu, Yuyang Chen, Junyang Xu, Zhou Li, Wenda Cui, Changqing Song, Cong Wang, Xianshi Jia, Ji'an Duan, Kai Han   +11 more
doaj   +1 more source

Femtosecond Laser Direct Writing of Porous Network Microstructures for Fabricating Super‐Slippery Surfaces with Excellent Liquid Repellence and Anti‐Cell Proliferation

, 2018
In this paper, it is demonstrated that one‐step femtosecond laser ablation can be used to directly fabricate porous network microstructures on various polymer surfaces, including poly(ethylene terephthalate) (PET), poly(methyl methacrylate), polyamide ...
Jiale Yong, Jinglan Huo, Q. Yang, Feng Chen, Yao Fang, Xingjuan Wu, Lin Liu, Xiaoyun Lu, Jingzhou Zhang, X. Hou   +9 more
semanticscholar   +1 more source

Magnetisation switching of FePt nanoparticle recording medium by femtosecond laser pulses

Scientific Reports, 2017
Manipulation of magnetisation with ultrashort laser pulses is promising for information storage device applications. The dynamics of the magnetisation response depends on the energy transfer from the photons to the spins during the initial laser ...
R. John, M. Berritta, D. Hinzke, C. Müller, T. Santos, H. Ulrichs, P. Nieves, P. Nieves, J. Walowski, Ritwik Mondal, O. Chubykalo-Fesenko, J. McCord, P. Oppeneer, U. Nowak, M. Münzenberg   +14 more
semanticscholar   +1 more source

Polarized micro-Raman studies of femtosecond laser written stress-induced optical waveguides in diamond [PDF]

, 2017
Understanding the physical mechanisms of the refractive index modulation induced by femtosecond laser writing is crucial for tailoring the properties of the resulting optical waveguides.
B. Sotillo, A. Chiappini, V. Bharadwaj, J. Hadden, F. Bosia, P. Olivero, Maurizio Ferrari, R. Ramponi, P. Barclay, S. Eaton   +9 more
semanticscholar   +1 more source

Confocal photoluminescence characterization of silicon-vacancy color centers in 4H-SiC fabricated by a femtosecond laser [PDF]

, 2020
Jiayu Liu, Zongwei Xu, Ying Song, Hong Wang, Bing Dong, Shaobei Li, Jia Ren, Qiang Li, Mathias Rommel, Xinhua Gu, Bowen Liu, Minglie Hu, Fengzhou Fang   +12 more
openalex   +1 more source

Epithelial downgrowth after femtosecond laser-assisted cataract surgery

American Journal of Ophthalmology Case Reports, 2019
Purpose: To present the case of a 72-year-old female with epithelial downgrowth after femtosecond laser-assisted cataract surgery. Observations: The patient previously underwent YAG vitreolysis after uncomplicated femtosecond laser-assisted cataract ...
Han Kim, Michele C. Lim, Mark J. Mannis, Esther S. Kim   +3 more
doaj   +1 more source