ITM Web Conf.
Volume 12, 2017The 4th Annual International Conference on Information Technology and Applications (ITA 2017)
|Number of page(s)||3|
|Section||Session 3: Computer|
|Published online||05 September 2017|
Acoustic Measurement of the Length of Air-plasma Filament Induced by an Intense Femtosecond Laser Pulse
1 School of Electronic and Information Engineering, Hubei University of Science and technology, Xianning, 437100, China
2 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and technology, Wuhan 430074, China
* Corresponding author: email@example.com
The paper studies acoustic emission from air-plasma filament induced by a strong femtosecond laser pulse. Acoustic signal is detected with a sensitive directional microphone. Acoustic measurement provides a new method to determine the length of a filament. Compared with other methods, acoustic measurement is simpler, more sensitive, and with higher spatial resolution. Information of filament length is experimentally acquired through measuring acoustic pressure at different position of filament. On the basis of the relationship between acoustic signal and free-electron density in filament, profile of free-electron density is demonstrated
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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