Micro-dynamics of optical breakdown in water induced by nanosecond laser pulses of 1064 nm wavelength

Grigory Toker; Valery Bulatov; Tatiana Kovalchuk; Israel Schechter

doi:10.1016/j.cplett.2009.02.044

Micro-dynamics of optical breakdown in water induced by nanosecond laser pulses of 1064 nm wavelength

Grigory Toker, Valery Bulatov, Tatiana Kovalchuk, Israel Schechter^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Optical breakdown in water induced by 1064 nm Nd:YAG laser was visualized and measured by applying shadow and Schlieren optical diagnostic techniques. The research was focused on the earlier stages of the breakdown process, just after the end of the heating laser pulse. The spatial characteristics of laser spark columns were measured and compared to numerical analysis of cavities arising over inclusions. Anomalously long laser spark columns were observed. The distribution of cavity dimensions and energies absorbed in the spark were measured along the laser spark column. A novel non-probability based criterion for laser breakdown threshold was suggested, namely, the pulse energy which generates a spark of negligibly small length.

Original language	English
Pages (from-to)	244-248
Number of pages	5
Journal	Chemical Physics Letters
Volume	471
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2009.02.044
State	Published - 26 Mar 2009
Externally published	Yes

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abstract = "Optical breakdown in water induced by 1064 nm Nd:YAG laser was visualized and measured by applying shadow and Schlieren optical diagnostic techniques. The research was focused on the earlier stages of the breakdown process, just after the end of the heating laser pulse. The spatial characteristics of laser spark columns were measured and compared to numerical analysis of cavities arising over inclusions. Anomalously long laser spark columns were observed. The distribution of cavity dimensions and energies absorbed in the spark were measured along the laser spark column. A novel non-probability based criterion for laser breakdown threshold was suggested, namely, the pulse energy which generates a spark of negligibly small length.",

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AU - Toker, Grigory

AU - Bulatov, Valery

AU - Kovalchuk, Tatiana

AU - Schechter, Israel

PY - 2009/3/26

Y1 - 2009/3/26

N2 - Optical breakdown in water induced by 1064 nm Nd:YAG laser was visualized and measured by applying shadow and Schlieren optical diagnostic techniques. The research was focused on the earlier stages of the breakdown process, just after the end of the heating laser pulse. The spatial characteristics of laser spark columns were measured and compared to numerical analysis of cavities arising over inclusions. Anomalously long laser spark columns were observed. The distribution of cavity dimensions and energies absorbed in the spark were measured along the laser spark column. A novel non-probability based criterion for laser breakdown threshold was suggested, namely, the pulse energy which generates a spark of negligibly small length.

AB - Optical breakdown in water induced by 1064 nm Nd:YAG laser was visualized and measured by applying shadow and Schlieren optical diagnostic techniques. The research was focused on the earlier stages of the breakdown process, just after the end of the heating laser pulse. The spatial characteristics of laser spark columns were measured and compared to numerical analysis of cavities arising over inclusions. Anomalously long laser spark columns were observed. The distribution of cavity dimensions and energies absorbed in the spark were measured along the laser spark column. A novel non-probability based criterion for laser breakdown threshold was suggested, namely, the pulse energy which generates a spark of negligibly small length.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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ER -

Micro-dynamics of optical breakdown in water induced by nanosecond laser pulses of 1064 nm wavelength

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