Formation of a periodic wave structure on the dry surface of a solid by TEA-CO2-laser pulses

1973 ◽  
Vol 2 (1) ◽  
pp. 45-46 ◽  
Author(s):  
M. Siegrist ◽  
G. Kaech ◽  
F. K. Kneubühl
Keyword(s):  
Co2 Laser ◽  
Wave Structure ◽  
Laser Pulses ◽  
Periodic Wave ◽  
Tea Co2 Laser

scholarly journals Generation of 16 Micrometer IR Laser by theOptical Pumping of CF4 Gas Molecules

2008 ◽  
Vol 5 (3) ◽  
pp. 457-459
Author(s):  
Baghdad Science Journal
Keyword(s):  
Co2 Laser ◽  
Optical Pumping ◽  
Laser Action ◽  
Laser Pulses ◽  
Tea Co2 Laser ◽  
Ir Laser ◽  
Gas Molecules ◽  
Output Laser

We report here the observation of 16 µm superradiance laser action generated from optical pumping of CF4 gas molecules (which is cooled to 140 Kº by a boil-off liquid-N2) by a TEA-CO2 laser 9R12 line. Output laser pulses of 7 mJ and 200 ns have been obtained.

Shock and compression of solids generated by TEA-CO2-laser pulses

1974 ◽  
Vol 10 (9) ◽  
pp. 734-734
Author(s):  
M. Siegrist ◽  
M. Gottret ◽  
F. Kneubuhl
Keyword(s):  
Co2 Laser ◽  
Laser Pulses ◽  
Tea Co2 Laser

Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres – Comparative study

2012 ◽  
Vol 258 (7) ◽  
pp. 2741-2748 ◽  
Author(s):  
J. Ciganovic ◽  
J. Stasic ◽  
B. Gakovic ◽  
M. Momcilovic ◽  
D. Milovanovic ◽  
...  
Keyword(s):  
Surface Modification ◽  
Comparative Study ◽  
Co2 Laser ◽  
Titanium Implant ◽  
Laser Pulses ◽  
Tea Co2 Laser

Interaction of TEA-CO2-laser pulses with metals enhanced by liquid layers

1973 ◽  
Vol 42 (5) ◽  
pp. 352-354 ◽  
Author(s):  
M. Siegrist ◽  
B. Adam ◽  
F. Kneubühl
Keyword(s):  
Co2 Laser ◽  
Laser Pulses ◽  
Tea Co2 Laser

scholarly journals Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper based alloys

2015 ◽  
Vol 80 (12) ◽  
pp. 1505-1513 ◽  
Author(s):  
Milos Momcilovic ◽  
Jovan Ciganovic ◽  
Dragan Rankovic ◽  
Uros Jovanovic ◽  
Milovan Stoiljkovic ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Pulse Length ◽  
Target Surface ◽  
Laser Pulses ◽  
Spectral Lines ◽  
Tea Co2 Laser ◽  
Plasma Spectroscopy ◽  
Plasma Region ◽  
Co2 Laser Radiation ◽  
Good Signal

The applicability of nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 ?m and 100 ns pulse length (initial spike), induced plasma under reduced air pressure for spectrochemical analysis of bronze and brass samples was investigated. The plasma consisted of two clearly distinguished and spatially separated regions and expanded to a distance of about 10 mm from the surface. Elemental composition of the samples was determined using a time-integrated space-resolved laser-induced plasma spectroscopy (TISR-LIPS) technique. Sharp and well resolved spectral lines mostly atomic, and negligibly low background emission, were obtained from a plasma region 7 mm from the target surface. Good signal to background and signal to noise ratios were obtained. Estimated detection limits for trace elements Mg, Fe, Al and Ca were in the order of 10 ppm in bronze and around 50 ppm in brass. Damage on the investigated samples induced by TEA CO2 laser radiation was negligible.

Nano-Second Surface Modification of Titanium Nitride Thin Film by Nd:YAG and TEA CO2 Lasers

2006 ◽  
Vol 518 ◽  
pp. 161-166 ◽  
Author(s):  
B. Gaković ◽  
I. Pongrac ◽  
S. Petrović ◽  
D. Minić ◽  
M. Trtica
Keyword(s):  
Thin Film ◽  
Titanium Nitride ◽  
Co2 Laser ◽  
Laser Energy ◽  
Target Surface ◽  
Laser Pulses ◽  
Tea Co2 Laser ◽  
Tin Film ◽  
Modification Of Titanium ◽  
Hydrodynamic Effects

In this work we investigated the interaction of ns laser pulses (TEA CO2 and Nd:YAG) with a titanium nitride (TiN) thin film. The TiN thin film of 1μm thickness was deposited by PVD method on silicon substrate. Modification of TiN film was induced by laser pulses with power densities of about 108 and 109 W/cm2. Part of the laser energy absorbed on the target surface was converted into thermal energy and effects such as melting, vaporization and exfoliation were observed. Nd:YAG laser produced craters with sharp periphery, while TEA CO2 laser created damages with broad boundary zone. Hydrodynamic effects were especially pronounced during irradiation with TEA CO2 laser.

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