Development of long pulse Nd. YAG laser system

The Nd:YAG laser with long pulse duration can be produced by using an appropriate pumping scheme. The purpose of this study is to construct a high voltage power supply for laser system. In this attempt multiple-mesh pulse forming technique was performed to obtain electrical pump pulses with a more r...

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Main Author:	Sidi Ahmad, Muhamad Fakaruddin
Format:	Thesis
Language:	English
Published:	2012
Subjects:	Q Science (General)
Online Access:	http://eprints.utm.my/id/eprint/37812/1/MuhamadFakaruddinSidiAhmadMFS2012.pdf
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id	my-utm-ep.37812
record_format	uketd_dc
spelling	my-utm-ep.378122017-09-20T08:54:39Z Development of long pulse Nd. YAG laser system 2012-12 Sidi Ahmad, Muhamad Fakaruddin Q Science (General) The Nd:YAG laser with long pulse duration can be produced by using an appropriate pumping scheme. The purpose of this study is to construct a high voltage power supply for laser system. In this attempt multiple-mesh pulse forming technique was performed to obtain electrical pump pulses with a more rectangular shape and long normal-mode laser pulses at constant power. The flashlamp driver was designed with variable input energy. A linear xenon flashlamp was selected as an optical pump for Nd:YAG laser crystal. The developed flashlamp driver consists of five major electronic circuits. These are signal controller device, simmer power supply (SPS), trigger pulse ignition circuit, capacitor charging power supply (CCPS) and multiple-mesh LC pulse forming network (MPFN). The construction of the flashlamp driver started with the design of a signal controller. The controller generated a small voltage to activate the electronic components such as silicon controlled rectified (SCR) and transistor. The ignition circuit was used to ignite xenon gases responsible to for forming ionized spark streamer between the two electrodes of the flashlamp. A low dc current was induced by the simmer power supply to sustain the flashlamp in simmering mode. The capacitor charging power supply was used to supply electrical power to capacitor within specific time. Radiation emitted by flashlamp was used to pump the Nd:YAG crystal. As a result a powerful Nd:YAG laser beam was generated having fundamental wavelength of 1064 nm, 650 microsecond pulse duration with maximum output energy of 250 mJ. 2012-12 Thesis http://eprints.utm.my/id/eprint/37812/ http://eprints.utm.my/id/eprint/37812/1/MuhamadFakaruddinSidiAhmadMFS2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Sidi Ahmad, Muhamad Fakaruddin Development of long pulse Nd. YAG laser system
description	The Nd:YAG laser with long pulse duration can be produced by using an appropriate pumping scheme. The purpose of this study is to construct a high voltage power supply for laser system. In this attempt multiple-mesh pulse forming technique was performed to obtain electrical pump pulses with a more rectangular shape and long normal-mode laser pulses at constant power. The flashlamp driver was designed with variable input energy. A linear xenon flashlamp was selected as an optical pump for Nd:YAG laser crystal. The developed flashlamp driver consists of five major electronic circuits. These are signal controller device, simmer power supply (SPS), trigger pulse ignition circuit, capacitor charging power supply (CCPS) and multiple-mesh LC pulse forming network (MPFN). The construction of the flashlamp driver started with the design of a signal controller. The controller generated a small voltage to activate the electronic components such as silicon controlled rectified (SCR) and transistor. The ignition circuit was used to ignite xenon gases responsible to for forming ionized spark streamer between the two electrodes of the flashlamp. A low dc current was induced by the simmer power supply to sustain the flashlamp in simmering mode. The capacitor charging power supply was used to supply electrical power to capacitor within specific time. Radiation emitted by flashlamp was used to pump the Nd:YAG crystal. As a result a powerful Nd:YAG laser beam was generated having fundamental wavelength of 1064 nm, 650 microsecond pulse duration with maximum output energy of 250 mJ.
format	Thesis
qualification_level	Master's degree
author	Sidi Ahmad, Muhamad Fakaruddin
author_facet	Sidi Ahmad, Muhamad Fakaruddin
author_sort	Sidi Ahmad, Muhamad Fakaruddin
title	Development of long pulse Nd. YAG laser system
title_short	Development of long pulse Nd. YAG laser system
title_full	Development of long pulse Nd. YAG laser system
title_fullStr	Development of long pulse Nd. YAG laser system
title_full_unstemmed	Development of long pulse Nd. YAG laser system
title_sort	development of long pulse nd. yag laser system
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/37812/1/MuhamadFakaruddinSidiAhmadMFS2012.pdf
_version_	1747816505451479040

Development of long pulse Nd. YAG laser system

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