DURIP 99 - Ultrafast Laser Dynamics: Exploring the Formation and Properties of Cluster Materials

2000 ◽  
Author(s):  
A. W. Castleman ◽  
Jr
Keyword(s):  
Ultrafast Laser ◽  
Laser Dynamics

Ultrafast laser processing of ceramics: Comprehensive survey of laser parameters

2021 ◽  
Vol 33 (1) ◽  
pp. 012009
Author(s):  
Aiko Narazaki ◽  
Hideyuki Takada ◽  
Dai Yoshitomi ◽  
Kenji Torizuka ◽  
Yohei Kobayashi
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Laser Parameters ◽  
Comprehensive Survey

Progress in ultrafast laser space-selective welding

2020 ◽  
Vol 13 (6) ◽  
pp. 1-15
Author(s):  
ZHANG Guo-dong ◽  
◽  
CHENG Guang-hua ◽  
ZHANG Wei ◽  
Keyword(s):  
Ultrafast Laser

From Semiconductor to Metal in a Flash: Observing Ultrafast Laser-Induced Phase Transformations

1997 ◽  
Vol 481 ◽  
Author(s):  
J. P. Callan ◽  
A. M.-T. Kim ◽  
L. Huangt ◽  
E. N. Glezer ◽  
E. Mazur
Keyword(s):  
Phase Transformations ◽  
Dielectric Function ◽  
Spectral Range ◽  
Laser Excitation ◽  
Spectroscopic Technique ◽  
Ultrafast Laser ◽  
Lattice Heating ◽  
Fs Laser

ABSTRACTWe use a new broadband spectroscopic technique to measure ultrafast changes in the dielectric function of a material over the spectral range 1.5–3.5 eV following intense 70-fs laser excitation. The results reveal the nature of the phase transformations which occur in the material following excitation. We studied the response of GaAs and Si. For GaAs, there are three distinct regimes of behavior as the pump fluence is increased — lattice heating, lattice disordering, and a semiconductor-to-metal transition.

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