scholarly journals Characterization of the fast ionization wave induced by a CO2 laser pulse in argon

2019 ◽  
Vol 126 (24) ◽  
pp. 243304 ◽  
Author(s):  
Kohei Shimamura ◽  
Ippei Yokota ◽  
Shigeru Yokota
Keyword(s):  
Laser Pulse ◽  
Co2 Laser ◽  
Ionization Wave ◽  
Wave Induced

Characterization of keyhole plasma in 20 kW-class CO2 laser welding

1999 ◽  
Author(s):  
Jay F. Tu ◽  
Isamu Miyamoto ◽  
Takashi Inoue ◽  
Etsuji Ohmura ◽  
Kazuhiko Ono ◽  
...  
Keyword(s):  
Laser Welding ◽  
Co2 Laser

scholarly journals Optically Switchable MeV Ion/Electron Accelerator

2021 ◽  
Vol 11 (12) ◽  
pp. 5424
Author(s):  
Itamar Cohen ◽  
Yonatan Gershuni ◽  
Michal Elkind ◽  
Guy Azouz ◽  
Assaf Levanon ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Accelerator ◽  
Energy Charge ◽  
Thin Foil ◽  
Main Pulse ◽  
Experimental Characterization ◽  
Particle Beams ◽  
Laser Accelerators

The versatility of laser accelerators in generating particle beams of various types is often promoted as a key applicative advantage. These multiple types of particles, however, are generated on vastly different irradiation setups, so that switching from one type to another involves substantial mechanical changes. In this letter, we report on a laser-based accelerator that generates beams of either multi-MeV electrons or ions from the same thin-foil irradiation setup. Switching from generation of ions to electrons is achieved by introducing an auxiliary laser pulse, which pre-explodes the foil tens of ns before irradiation by the main pulse. We present an experimental characterization of the emitted beams in terms of energy, charge, divergence, and repeatability, and conclude with several examples of prospective applications for industry and research.

Characterization of Shilnikov Chaos in a CO2 Laser Containing a Saturable Absorber

1989 ◽  
pp. 299-302 ◽  
Author(s):  
D. Hennequin ◽  
M. Lefranc ◽  
A. Bekkali ◽  
D. Dangoisse ◽  
P. Glorieux
Keyword(s):  
Saturable Absorber ◽  
Co2 Laser

scholarly journals 2D characterization of the pressure generated by an intense laser pulse on an aluminum target

2018 ◽  
Author(s):  
Bertrand Aubert ◽  
David Hebert ◽  
Jean-Luc Rullier ◽  
Emilien Lescoute ◽  
Laurent Videau ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Aluminum Target

scholarly journals Growth and Characterization of Graphene on Polycrystalline SiC Substrate Using Heating by CO2 Laser Beam

2016 ◽  
Vol 19 (6) ◽  
pp. 1329-1334 ◽  
Author(s):  
Nierlly Karinni de Almeida Maribondo Galvão ◽  
Getúlio de Vasconcelos ◽  
Marcos Valentim Ribeiro dos Santos ◽  
Tiago Moreira Bastos Campos ◽  
Rodrigo Sávio Pessoa ◽  
...  
Keyword(s):  
Laser Beam ◽  
Co2 Laser

Spatio-temporal characterization of double plasma mirror for ultrahigh contrast and stable laser pulse

2011 ◽  
Vol 104 (1) ◽  
pp. 81-86 ◽  
Author(s):  
IJ. Kim ◽  
I. W. Choi ◽  
S. K. Lee ◽  
K. A. Janulewicz ◽  
J. H. Sung ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Spatio Temporal ◽  
Stable Laser

scholarly journals Direct Writing of Copper Micropatterns Using Near-Infrared Femtosecond Laser-Pulse-Induced Reduction of Glyoxylic Acid Copper Complex

Micromachines ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 401 ◽  
Author(s):  
Mizue Mizoshiri ◽  
Keiko Aoyama ◽  
Akira Uetsuki ◽  
Tomoji Ohishi
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Line Width ◽  
Co2 Laser ◽  
Near Infrared ◽  
Glyoxylic Acid ◽  
Ambient Air ◽  
Femtosecond Laser Pulses ◽  
Direct Writing ◽  
Cu Complex

We have fabricated Cu-based micropatterns in an ambient environment using femtosecond laser direct writing to reduce a glyoxylic acid Cu complex spin-coated onto a glass substrate. To do this, we scanned a train of focused femtosecond laser pulses over the complex film in air, following which the non-irradiated complex was removed by rinsing the substrates with ethanol. A minimum line width of 6.1 µm was obtained at a laser-pulse energy of 0.156 nJ and scanning speeds of 500 and 1000 µm/s. This line width is significantly smaller than that obtained in previous work using a CO2 laser. In addition, the lines are electrically conducting. However, the minimum resistivity of the line pattern was 2.43 × 10−6 Ω·m, which is ~10 times greater than that of the pattern formed using the CO2 laser. An X-ray diffraction analysis suggests that the balance between reduction and re-oxidation of the glyoxylic acid Cu complex determines the nature of the highly reduced Cu patterns in the ambient air.

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