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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/192845
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- Acoustic monitoring of microplasma formation and filamentation of tightly focused femtosecond laser pulses in silica glass
- Kudryashov, Sergey I.; Zvorykin, Vladimir D.; Ionin, Andrei A.; Mizeikis, Vygantas; Juodkazis, Saulius; Misawa, Hiroaki
- Contact acoustic technique has been employed to perform spatially resolved in situ detection of microplasma formation and filamentation of tightly focused femtosecond laser pulses with supercritical pulse powers in bulk dielectrics, via corresponding acoustic emission. Investigation of acoustic generation mechanisms related to the plasma formation and filamentation effects reveals the critical character of the opaque microplasma and provides estimates of its gigapascal-level pressures and energy densities of a few kJ cm3. The acoustic measurement enables real-time in situ monitoring and revealing of basic mechanisms of ionization and filamentation in bulk dielectrics.
- Publication type
- Journal article
- Applied Physics Letters, Vol. 92, no. 10 (Mar 2008), paper no. 101916
- Publication year
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering
- Acoustic monitoring; Femtosecond laser pulses; Filamentation; Microplasma formation; Silica glass
- American Institute of Physics
- Publisher URL
- Copyright © 2008 American Institute of Physics. Published version of this paper reproduced here in accordance with the copyright policy of the publisher.
- Additional information
- The authors acknowledge support from the Grant-in-Aid from the Ministry of Education, Science, Sports, and Culture of Japan (grant no. 19360322).
- Full text
- Peer reviewed