scholarly journals Continuous fiberizing by laser melting (Cofiblas): Production of highly flexible glass nanofibers with effectively unlimited length

2020 ◽  
Vol 6 (6) ◽  
pp. eaax7210
Author(s):  
F. Quintero ◽  
J. Penide ◽  
A. Riveiro ◽  
J. del Val ◽  
R. Comesaña ◽  
...  
Keyword(s):  
High Power ◽  
Gas Jet ◽  
Experimental Setup ◽  
High Power Laser ◽  
Physical Processes ◽  
Laser Melting ◽  
Power Laser ◽  
Distinctive Features ◽  
Innovative Method ◽  
Supersonic Gas Jet

The development of nanofibers is expected to foster the creation of outstanding lightweight nanocomposites and flexible and transparent composites for applications such as optoelectronics. However, the reduced length of existing nanofibers and nanotubes limits mechanical strengthening and effective manufacturing. Here, we present an innovative method that produces glass nanofibers with lengths that are, effectively, unlimited by the process. The method uses a combination of a high-power laser with a supersonic gas jet. We describe the experimental setup and the physical processes involved, and, with the aid of a mathematical simulation, identify and discuss the key parameters which determine its distinctive features and feasibility. This method enabled the production of virtually unlimited long, solid, and nonporous glass nanofibers that display outstanding flexibility and could be separately arranged and weaved.

High-power laser cutting using a gas jet

1969 ◽  
Vol 1 (5) ◽  
pp. 255-258 ◽  
Author(s):  
F.W. Lunau ◽  
E.W. Paine ◽  
M. Richardson ◽  
M.D.S.P. Wijetunge
Keyword(s):  
High Power ◽  
Laser Cutting ◽  
Gas Jet ◽  
High Power Laser ◽  
Power Laser

scholarly journals Selective Laser Melting of Biomaterial (Pure Titanium) with High-Power Laser

2012 ◽  
Vol 33 (2) ◽  
pp. 166-174 ◽  
Author(s):  
Takayuki Nakamoto ◽  
Nobuhiko Shirakawa ◽  
Naruaki Shinomiya ◽  
Haruyuki Inui
Keyword(s):  
Selective Laser Melting ◽  
High Power ◽  
Pure Titanium ◽  
High Power Laser ◽  
Laser Melting ◽  
Power Laser

Experimental setup for studying processes initiated by the interaction of high-power laser radiation and matter

2016 ◽  
Vol 80 (12) ◽  
pp. 1512-1515 ◽  
Author(s):  
M. N. Larichev ◽  
A. M. Velichko ◽  
G. E. Belyaev ◽  
A. I. Nikitin ◽  
A. S. Osokin ◽  
...  
Keyword(s):  
Laser Radiation ◽  
High Power ◽  
Experimental Setup ◽  
High Power Laser ◽  
Power Laser ◽  
High Power Laser Radiation

Improving a high-power laser based relativistic electron source: the role of laser pulse contrast and gas jet density profile

2022 ◽  
Author(s):  
Anastasios Grigoriadis ◽  
Georgia Andrianaki ◽  
Ioannis Fitilis ◽  
Vasilis Menelaos Dimitriou ◽  
Eugene Lawrence Clark ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Pulse ◽  
Relativistic Electron ◽  
Density Profile ◽  
High Power ◽  
Electron Source ◽  
Gas Jet ◽  
High Power Laser ◽  
Power Laser ◽  
Pulse Contrast

Abstract A relativistic electron source based on high power laser interaction with gas jet targets has been developed at the Institute of Plasma Physics & Lasers of the Hellenic Mediterranean University. Initial measurements were conducted using the “Zeus” 45 TW laser with peak intensities in the range of 1018-1019 W/cm2 interacting with a He pulsed gas jet having a 0.8 mm diameter nozzle. A significant improvement of the electron signal was measured after using an absorber to improve the laser pulse contrast from 10-10 to 10-11. A high stability quasi-monoenergetic electron beam of about 50 MeV was achieved and measured using a magnetic spectrometer for pulsed gas jet backing pressure of 12 bar. Supplementary studies using a 3 mm diameter nozzle for backing pressures in the range of 35 to 40 bar showed electron beam production with energies spread in the range from 50 to 150 MeV. The pulsed jet density profile was determined using interferometric techniques. Particle-in-cell (PIC) simulations, at the above experimentally determined conditions, support our experimental findings.

scholarly journals Наблюдение лазерной искры на скачке уплотнения в газоструйной мишени

2019 ◽  
Vol 45 (19) ◽  
pp. 14
Author(s):  
А.Н. Нечай ◽  
А.А. Перекалов ◽  
Н.И. Чхало ◽  
Н.Н. Салащенко
Keyword(s):  
Shock Wave ◽  
Nozzle Exit ◽  
Extreme Ultraviolet ◽  
Gas Jet ◽  
High Power Laser ◽  
Power Laser ◽  
Plasma Sources ◽  
Laser Spark ◽  
Supersonic Gas Jet ◽  
Extreme Ultraviolet Radiation

The problem of degradation of gas nozzles is relevant in designing of high-power laser-plasma sources of extreme ultraviolet radiation with a gas jet as a target. Degradation is observed due to insufficient removal of the zone of formation of a laser spark from the nozzle exit. A cardinal solution of this problem is proposed due to the formation of a laser spark on shock waves, which are specially formed during the outflow of a supersonic gas jet. In this work, a laser spark was obtained on a similar shock wave and the emission intensity was measured as a function of the geometrical location of the spark formation.

Feasibility Experiments for Underwater Shock and Bubble Generation with a High-Power Laser

1999 ◽  
Author(s):  
Theodore G. Jones ◽  
Jacob Grun ◽  
H. R. Burris ◽  
Charles Manka
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Bubble Generation ◽  
Underwater Shock
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