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Laser plasma induce damage on burnt paper

Ali, Ahmad Hadi and Bidin, Noriah Laser plasma induce damage on burnt paper. In: International Conference on Science and Technology (ICSTIE '06), 8-9 December 2006, Penang.

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Abstract

High intensity laser pulse can cause damage on material when brought to focus. In this paper the effects of laser induce damage on burnt paper is reported. A Nd:YAG solid-state laser was used as a laser source. The peak power of the laser pulse was varied from 21.61 MW to 22.25 MW. Two-lens technique is used in order to focus the laser beam. Burnt paper was placed at the focal region. The focused laser beam generates an optical breakdown accompanied with plasma formation, thus induce damage on the burnt paper. For viewing purposes, a photomicroscope model Q-520 LEICA was used to magnify the damage. The image was processed and analyzed with the help Matrox Inspector version 2.1 software. The results show that the laser plasma induces quite a symmetrical and uniform configuration of damage. In addition, observation result shows that the e maximum damage arear was measured as 0.150 ± 0.008 mm at peak power of 21.93 MW.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: laser; plasma; damage; burnt paper; peak power
Subjects: Q Science > QC Physics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 08 Nov 2012 06:17
Last Modified: 08 Nov 2012 06:17
URI: http://eprints.uthm.edu.my/id/eprint/2795
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