Abstract
The laser-induced air breakdown is produced by focusing a high energy pulsed laser beam which heats rapidly the air at the focusing point. This produces a tiny explosion which generates a sonic impulse. The sonic pulse is repeatable, omnidirectional and broadband. Furthermore, the laser-induced air breakdown can be projected inside an enclosed space through a window of transparent material thus providing a massless source. The laser-induced air breakdown concentrates most of its sonic energy between 1 kHz and 100 kHz which suggests that it can be used for scale model measurements. The impulse response of an enclosed space made of glass, that represents a rectangular room, was measured using laser-induced air breakdown and compared to a computer simulation. The measured impulse response matched the simulated response of the scale room which confirms that laser-induced breakdown can be used as point source in scale model acoustic work.
Original language | English |
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Title of host publication | Forum Acusticum, FA 2014 |
Publisher | European Acoustics Association |
Number of pages | 4 |
Volume | 2014-January |
ISBN (Electronic) | 9788361402282 |
Publication status | Published - 2014 |
MoE publication type | A4 Article in a conference publication |
Event | Forum Acusticum - Kraków, Poland Duration: 7 Sep 2014 → 12 Sep 2014 Conference number: 7 |
Conference
Conference | Forum Acusticum |
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Abbreviated title | FA |
Country/Territory | Poland |
City | Kraków |
Period | 07/09/2014 → 12/09/2014 |