Nonlinear changes in plasma and crater properties during laser ablation of Si
Publication Type | Journal Article
|
---|
Authors | |
---|---|
DOI |
10.1063/1.124646
|
LBL Report Number |
LBNL-44076
|
Abstract |
A dramatic change in plasma characteristics, as well as a significant increase in the quantity of ablated mass were observed at a laser power density threshold of 20 GW/cm2. The electron number density and temperature of the laser-induced plasma show dramatic changes in their nonlinear behavior in the range of 2-80 GW/cm2. The crater volume undergoes some type of phase explosion at the threshold. Mechanisms such as inverse bremsstrahlung and self-regulation were used to describe the behavior below threshold. Self-focusing and critical temperature are discussed to explain the dramatic changes at the threshold. |
Journal |
Applied Physics Letters
|
Volume |
75
|
Year of Publication |
1999
|
Issue |
9
|
Pagination |
1216-1218
|
ISSN Number |
0003-6951 (print), 1077-3118 (online)
|
Short Title |
Appl. Phys. Lett.
|
Keywords | |
Organizations | |
Download citation |