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Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System

Mode-locked lasers are lasers with ultrashort pulses, typically in the range of a few femtoseconds. The mode-locked laser has many applications such as z-scan to determine non-linear index of a material and micromachining of transparent material. However, conventional solid state mode-locked lasers...

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Main Author: Leong, Nathaniel Jenn Kwang
Format: Final Year Project / Dissertation / Thesis
Published: 2020
Subjects:
QC Physics
Online Access:http://eprints.utar.edu.my/4102/1/PH_1705711_FYP_report_%2D_LEONG_JENN_KWANG_NATHANIEL.pdf
http://eprints.utar.edu.my/4102/
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spelling my-utar-eprints.41022021-06-11T18:05:44Z Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System Leong, Nathaniel Jenn Kwang QC Physics Mode-locked lasers are lasers with ultrashort pulses, typically in the range of a few femtoseconds. The mode-locked laser has many applications such as z-scan to determine non-linear index of a material and micromachining of transparent material. However, conventional solid state mode-locked lasers are large and expensive and require a complicated cooling system. A mode-locked fibre laser is inexpensive and is less bulky. However, they are not able to produce high output power that is comparable to the conventional solid state mode-locked laser. Therefore, to obtain high power, amplification is required. In this research, a mode-locked fibre laser using graphene oxide (GO) as saturable absorber will be developed. The mode-locked pulses will then be amplified using a two-stage amplification process to obtain higher output power. Due to non-linear effects in the fibre, the pulse will be significantly broadened due to supercontinuum generation which will be minimised by adding a length of single mode fibre (SMF) to broaden the pulse before amplification to reduce the intensity and thus, reduce the non-linear effects. This system is able to produce output power up to 164 mW. Some recommendations to further increase the output power and improve the performance of the mode-locked fibre laser system are given in this report. 2020 Final Year Project / Dissertation / Thesis NonPeerReviewed application/pdf http://eprints.utar.edu.my/4102/1/PH_1705711_FYP_report_%2D_LEONG_JENN_KWANG_NATHANIEL.pdf Leong, Nathaniel Jenn Kwang (2020) Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System. Final Year Project, UTAR. http://eprints.utar.edu.my/4102/
institution Universiti Tunku Abdul Rahman
building UTAR Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tunku Abdul Rahman
content_source UTAR Institutional Repository
url_provider http://eprints.utar.edu.my
topic QC Physics
spellingShingle QC Physics
Leong, Nathaniel Jenn Kwang
Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
description Mode-locked lasers are lasers with ultrashort pulses, typically in the range of a few femtoseconds. The mode-locked laser has many applications such as z-scan to determine non-linear index of a material and micromachining of transparent material. However, conventional solid state mode-locked lasers are large and expensive and require a complicated cooling system. A mode-locked fibre laser is inexpensive and is less bulky. However, they are not able to produce high output power that is comparable to the conventional solid state mode-locked laser. Therefore, to obtain high power, amplification is required. In this research, a mode-locked fibre laser using graphene oxide (GO) as saturable absorber will be developed. The mode-locked pulses will then be amplified using a two-stage amplification process to obtain higher output power. Due to non-linear effects in the fibre, the pulse will be significantly broadened due to supercontinuum generation which will be minimised by adding a length of single mode fibre (SMF) to broaden the pulse before amplification to reduce the intensity and thus, reduce the non-linear effects. This system is able to produce output power up to 164 mW. Some recommendations to further increase the output power and improve the performance of the mode-locked fibre laser system are given in this report.
format Final Year Project / Dissertation / Thesis
author Leong, Nathaniel Jenn Kwang
author_facet Leong, Nathaniel Jenn Kwang
author_sort Leong, Nathaniel Jenn Kwang
title Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
title_short Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
title_full Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
title_fullStr Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
title_full_unstemmed Development of High-Power Pulsed Fibre Laser Using Master Oscillator Power Amplifier (MOPA) System
title_sort development of high-power pulsed fibre laser using master oscillator power amplifier (mopa) system
publishDate 2020
url http://eprints.utar.edu.my/4102/1/PH_1705711_FYP_report_%2D_LEONG_JENN_KWANG_NATHANIEL.pdf
http://eprints.utar.edu.my/4102/
_version_ 1705060939037933568
score 13.211869

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