Plasma formation induced by a Q-switched Nd:YAG laser
Light energy can create a plasma when high irradiance is focused. This proeess of opticical breakdown can be achieved by using a Q-switched laser. In this paper, we report the application of a high-power Nd:YAG laser to generate plasma. Two different techniques were conducted to generate optical bre...
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| Format: | Article |
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Institut Fizik Malaysia
2004
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| Online Access: | http://eprints.utm.my/533/ |
| _version_ | 1848889942830219264 |
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| author | Ali, Ahmad Hadi Bidin, Noriah |
| author_facet | Ali, Ahmad Hadi Bidin, Noriah |
| author_sort | Ali, Ahmad Hadi |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | Light energy can create a plasma when high irradiance is focused. This proeess of opticical breakdown can be achieved by using a Q-switched laser. In this paper, we report the application of a high-power Nd:YAG laser to generate plasma. Two different techniques were conducted to generate optical breakdown and initiate the plasma. In the first technique the laser was diverged by a negative lens and brought to focus by a wide-angle camera lens of 28 mm focal length. Secondly, the same concave lens was employed to expand the beam but converged back by using a longer focal length of 50 mm. The plasma formation from both focusing systems are visualized and recorded via CCD video camera in conjunction with a high-speed photography system. The recorded images were analyzed using the Matrox Inspector version 2.1 software. The maximum plasma length obtained from short and long focal length system are 1.193 ± 0.060 mm and 2.815 ± 0.141 mm respectively. Nevertheless, both techniques produced broadly elliptical shape of plasma and exponentially expand with respect to the increasing of laser power. |
| first_indexed | 2025-11-15T20:34:12Z |
| format | Article |
| id | utm-533 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:34:12Z |
| publishDate | 2004 |
| publisher | Institut Fizik Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-5332017-03-07T08:50:34Z http://eprints.utm.my/533/ Plasma formation induced by a Q-switched Nd:YAG laser Ali, Ahmad Hadi Bidin, Noriah QC Physics Light energy can create a plasma when high irradiance is focused. This proeess of opticical breakdown can be achieved by using a Q-switched laser. In this paper, we report the application of a high-power Nd:YAG laser to generate plasma. Two different techniques were conducted to generate optical breakdown and initiate the plasma. In the first technique the laser was diverged by a negative lens and brought to focus by a wide-angle camera lens of 28 mm focal length. Secondly, the same concave lens was employed to expand the beam but converged back by using a longer focal length of 50 mm. The plasma formation from both focusing systems are visualized and recorded via CCD video camera in conjunction with a high-speed photography system. The recorded images were analyzed using the Matrox Inspector version 2.1 software. The maximum plasma length obtained from short and long focal length system are 1.193 ± 0.060 mm and 2.815 ± 0.141 mm respectively. Nevertheless, both techniques produced broadly elliptical shape of plasma and exponentially expand with respect to the increasing of laser power. Institut Fizik Malaysia 2004 Article PeerReviewed Ali, Ahmad Hadi and Bidin, Noriah (2004) Plasma formation induced by a Q-switched Nd:YAG laser. Jurnal Fizik Malaysia, 25 (1-2). pp. 33-41. ISSN 0128-0333 https://www.researchgate.net/publication/291020215_Plasma_Formation_Induced_by_a_Q-Switched_NdYAG_Laser |
| spellingShingle | QC Physics Ali, Ahmad Hadi Bidin, Noriah Plasma formation induced by a Q-switched Nd:YAG laser |
| title | Plasma formation induced by a Q-switched Nd:YAG laser |
| title_full | Plasma formation induced by a Q-switched Nd:YAG laser |
| title_fullStr | Plasma formation induced by a Q-switched Nd:YAG laser |
| title_full_unstemmed | Plasma formation induced by a Q-switched Nd:YAG laser |
| title_short | Plasma formation induced by a Q-switched Nd:YAG laser |
| title_sort | plasma formation induced by a q-switched nd:yag laser |
| topic | QC Physics |
| url | http://eprints.utm.my/533/ http://eprints.utm.my/533/ |