Single-crystal Brillouin spectroscopy with CO2 laser heating and variable q

2015 ◽  
Vol 86 (6) ◽  
pp. 063905 ◽  
Author(s):  
Jin S. Zhang ◽  
Jay D. Bass ◽  
Gaohua Zhu
Keyword(s):  
Single Crystal ◽  
Co2 Laser ◽  
Laser Heating ◽  
Brillouin Spectroscopy

Nano and micro structure of laser damaged fullerite single crystal

1994 ◽  
Vol 359 ◽  
Author(s):  
M. Manfredini ◽  
P. Milani
Keyword(s):  
Single Crystal ◽  
Laser Heating ◽  
Acoustic Properties ◽  
Carbon Aerogels ◽  
High Fluence ◽  
Micro Structure ◽  
Carbon Phase ◽  
Brillouin Spectroscopy ◽  
Inert Environment ◽  
Power Densities

ABSTRACTWe have studied the nano and micro structure of the product resulting from high fluence laser irradiation of C60 single crystal. Raman spectra reveal that, in the presence of oxygen, amorphous carbon (a-C) is formed. The laser heating of the sample promotes fullerene o:ddation and cage opening reactions: the new carbon phase is originated by the coalescence of C60 fragments. The irradiance threshold tbr a-C tbrmation is discussed. Brillouin spectroscopy shows that the acoustic properties of the irradiated material are typical ofa higly porous material similar to carbon aerogels. Under irradiation in an inert environment C60 degradation is not observed, even for high power densities.

CO2 laser heating of surfaces: Melt pool formation at surface

2012 ◽  
Vol 44 (2) ◽  
pp. 463-470 ◽  
Author(s):  
O. Momin ◽  
S.Z. Shuja ◽  
B.S. Yilbas
Keyword(s):  
Co2 Laser ◽  
Laser Heating ◽  
Melt Pool ◽  
Pool Formation

Elasticity of single-crystal calcite and rhodochrosite by Brillouin spectroscopy

2001 ◽  
Vol 86 (11-12) ◽  
pp. 1525-1529 ◽  
Author(s):  
Chien-Chih Chen ◽  
Chung-Cherng Lin ◽  
Lin-Gun Liu ◽  
Stanislav V. Sinogeikin ◽  
Jay D. Bass
Keyword(s):  
Single Crystal ◽  
Brillouin Spectroscopy

Elasticity of single crystal and polycrystalline MgSiO3perovskite by Brillouin spectroscopy

2004 ◽  
Vol 31 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Stanislav V. Sinogeikin ◽  
Jianzhong Zhang ◽  
Jay D. Bass
Keyword(s):  
Single Crystal ◽  
Brillouin Spectroscopy
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