A Novel Acoustic Diagnostic Method on Femtosecond Laser Plasma Shock Wave

Dong Zhong; Zhong Ming Li; Ruo Lin Ruan; Chen Chun

doi:10.4028/www.scientific.net/MSF.861.287

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HomeMaterials Science ForumMaterials Science Forum Vol. 861A Novel Acoustic Diagnostic Method on Femtosecond...

A Novel Acoustic Diagnostic Method on Femtosecond Laser Plasma Shock Wave

Abstract:

In the paper, the optical fiber F-P acoustic emission sensing probe has been proposed to monitor online space-time progress of femtosecond laser plasma shock wave for the first time, the structure of sensing probe is microstructure with full optical fiber probes without glue, it can measure weak acoustic emission high frequency signal on femtosecond laser plasma shock wave. In the process of femtosecond laser ablating copper, iron and aluminum, we research and analyze the plasma shock wave acoustic emission signal change regulation under different laser pulse energy and different distance between the laser and the optical fiber sensing probe, and we analyze the feature of the acoustic emission signal spectrum. Experiment establishes a kind of new optical fiber sensing measurement method for femtosecond laser plasma shock wave acoustic emission signal.

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Periodical:

Materials Science Forum (Volume 861)

Pages:

287-292

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.861.287

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Online since:

July 2016

Authors:

Dong Zhong*, Zhong Ming Li, Ruo Lin Ruan, Chen Chun

Keywords:

Acoustic Signal, Femtosecond Laser, Optical Fiber Sensing Technology, Plasma Shock Wave

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* - Corresponding Author

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