ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing
This work investigates the characteristics of pulses generated via passive Q-switching in S- and C-band using zinc oxide nanoparticles as saturable absorber. Unlike active Q switching, passive Q-switching is a cheaper and simpler alternative to obtain pulses with repetition rates in the range of kil...
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| Format: | Thesis |
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2018
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| Online Access: | http://studentsrepo.um.edu.my/12489/ http://studentsrepo.um.edu.my/12489/1/Cherrie_Lee.pdf |
| _version_ | 1848774667479810048 |
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| author | Cherrie Lee , Sue Jing |
| author_facet | Cherrie Lee , Sue Jing |
| author_sort | Cherrie Lee , Sue Jing |
| building | UM Research Repository |
| collection | Online Access |
| description | This work investigates the characteristics of pulses generated via passive Q-switching in S- and C-band using zinc oxide nanoparticles as saturable absorber. Unlike active Q switching, passive Q-switching is a cheaper and simpler alternative to obtain pulses with repetition rates in the range of kilohertz and pulse width of mircoseconds. There are several techniques to obtain passively Q-switched laser such as the employment of nonlinear polarization rotation (NPR), semiconductor saturable absorber (SESAM), carbon-based saturable absorber (single-walled carbon nanotubes (SWCNT), graphene and graphene oxide) and transition metal-dichalcogenides saturable absorber (molybdenum disulfide, molybdenum diselenide, tungsten disulfide and tungsten diselenide). Nanomaterials such as zinc oxide nanoparticles have distinctive optical, electronic and mechanical properties which made them a suitable candidate as a saturable absorber (SA) for passively Q-switched laser. Erbium-doped fiber (EDF) is used as the gain medium in the laser cavity to obtain Q-switched pulses in C-band. C-band is the most commonly used wavelength in optical communications. Due to increasing data traffic, there is a demand to expand the optical network to other bands to reduce network congestion. One of the bands being considered to accommodate this expansion is S-band. Depressed-cladding erbium-doped fiber (DC-EDF) is used as the gain medium in the laser cavity to obtain Q-switched pulses in S-band. The tuning range of these pulses in C-band and S-band are also investigated. The results obtained from this work is instrumental as Q-switched lasers are widely used in many applications such as aesthetic treatment, biomedical diagnostic, remote-sensing and telecommunications.
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| first_indexed | 2025-11-14T14:01:57Z |
| format | Thesis |
| id | um-12489 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T14:01:57Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-124892021-11-01T00:11:04Z ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing Cherrie Lee , Sue Jing Q Science (General) QC Physics This work investigates the characteristics of pulses generated via passive Q-switching in S- and C-band using zinc oxide nanoparticles as saturable absorber. Unlike active Q switching, passive Q-switching is a cheaper and simpler alternative to obtain pulses with repetition rates in the range of kilohertz and pulse width of mircoseconds. There are several techniques to obtain passively Q-switched laser such as the employment of nonlinear polarization rotation (NPR), semiconductor saturable absorber (SESAM), carbon-based saturable absorber (single-walled carbon nanotubes (SWCNT), graphene and graphene oxide) and transition metal-dichalcogenides saturable absorber (molybdenum disulfide, molybdenum diselenide, tungsten disulfide and tungsten diselenide). Nanomaterials such as zinc oxide nanoparticles have distinctive optical, electronic and mechanical properties which made them a suitable candidate as a saturable absorber (SA) for passively Q-switched laser. Erbium-doped fiber (EDF) is used as the gain medium in the laser cavity to obtain Q-switched pulses in C-band. C-band is the most commonly used wavelength in optical communications. Due to increasing data traffic, there is a demand to expand the optical network to other bands to reduce network congestion. One of the bands being considered to accommodate this expansion is S-band. Depressed-cladding erbium-doped fiber (DC-EDF) is used as the gain medium in the laser cavity to obtain Q-switched pulses in S-band. The tuning range of these pulses in C-band and S-band are also investigated. The results obtained from this work is instrumental as Q-switched lasers are widely used in many applications such as aesthetic treatment, biomedical diagnostic, remote-sensing and telecommunications. 2018 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/12489/1/Cherrie_Lee.pdf Cherrie Lee , Sue Jing (2018) ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing. Masters thesis, Universiti Malaya. http://studentsrepo.um.edu.my/12489/ |
| spellingShingle | Q Science (General) QC Physics Cherrie Lee , Sue Jing ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title | ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title_full | ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title_fullStr | ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title_full_unstemmed | ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title_short | ZNO nanoparticles as saturable absorber for passively Q-switched fiber laser in C-and S-band / Cherrie Lee Sue Jing |
| title_sort | zno nanoparticles as saturable absorber for passively q-switched fiber laser in c-and s-band / cherrie lee sue jing |
| topic | Q Science (General) QC Physics |
| url | http://studentsrepo.um.edu.my/12489/ http://studentsrepo.um.edu.my/12489/1/Cherrie_Lee.pdf |