Title :
Optical induced breakdown in liquids by 0.532 μm and 1.06 μm short pulse lasers
Author :
Yasojima, Yoshiyuki ; Tomita, Kouki
Author_Institution :
Sch. of Eng., Kinki Univ., Hiroshima, Japan
Abstract :
In this paper, probabilistic behavior of the optical breakdown in water is investigated as a function of the laser intensity using Q-switched lasers and is compared with the breakdown probability of air in which an avalanche mechanism is believed to govern the breakdown process. The same kinds of breakdown measurement were done in solid PMMA in which avalanche ionization is not likely to occur due to the amorphous nature of PMMA. From these studies, a mechanism of optical breakdown in liquids is discussed.
Keywords :
dielectric liquids; electric breakdown; laser beam effects; water; 0.532 micron; 1.06 micron; 5 ns; H2O; Q-switched lasers; air; amorphous PMMA; avalanche ionization; avalanche mechanism; laser intensity; liquids; optical induced breakdown; probabilistic behavior; short pulse lasers; solid PMMA; water; Avalanche breakdown; Electric breakdown; Electrons; Ionization; Linearity; Liquids; Optical attenuators; Optical pulses; Plasma measurements; Solids;
Conference_Titel :
Dielectric Liquids, 2002. ICDL 2002. Proceedings of 2002 IEEE 14th International Conference on
Print_ISBN :
0-7803-7350-2
DOI :
10.1109/ICDL.2002.1022751
