Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser
A nanocomposite of titania-coated silica saturable absorber (TiO2–SiO2-SA) was fabricated via alkaline fusion and spin-coating. The TiO2–SiO2-SA possessed nonlinear saturable absorption and optical limiting effect with 30.35% modulation depth, 42.57 μJ/cm2 saturation fluence, and 0.0075 cm2/μJ two-p...
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| Format: | Article |
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Elsevier
2023
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| _version_ | 1825939691387486208 |
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| author | Mohd Yusoff, Norita Lee, Han Kee Ng, Eng Khoon Rosli, Natrah Shafiqah Che Abdullah, Che Azurahanim Alresheedi, Mohammed Thamer Mahdi, Mohd Adzir |
| author_facet | Mohd Yusoff, Norita Lee, Han Kee Ng, Eng Khoon Rosli, Natrah Shafiqah Che Abdullah, Che Azurahanim Alresheedi, Mohammed Thamer Mahdi, Mohd Adzir |
| author_sort | Mohd Yusoff, Norita |
| collection | UPM |
| description | A nanocomposite of titania-coated silica saturable absorber (TiO2–SiO2-SA) was fabricated via alkaline fusion and spin-coating. The TiO2–SiO2-SA possessed nonlinear saturable absorption and optical limiting effect with 30.35% modulation depth, 42.57 μJ/cm2 saturation fluence, and 0.0075 cm2/μJ two-photon absorption coefficient. By designing a ring cavity erbium-doped fiber laser in net normal dispersion regime and TiO2–SiO2-SA as mode-locker, a stable noise-like pulse (NLP) at 1.57 μm with ∼21 nm spectral bandwidth was initiated at low threshold power of 22.6 mW, and maintained its operation at maximum pump power of 234 mW. A pulse spike of 587 fs riding on 4.47 ps pulse pedestal at 7.66 MHz repetition frequency confirmed its NLP regime. The generated NLP with TiO2–SiO2-SA was very stable and estimated damage threshold of at least 786 μJ/cm2 pumping fluence suggest its potential as one of next generation nanocomposite materials for ultrafast photonics. |
| first_indexed | 2024-12-09T02:21:03Z |
| format | Article |
| id | upm.eprints-108986 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-12-09T02:21:03Z |
| publishDate | 2023 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-1089862024-10-14T04:12:42Z http://psasir.upm.edu.my/id/eprint/108986/ Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser Mohd Yusoff, Norita Lee, Han Kee Ng, Eng Khoon Rosli, Natrah Shafiqah Che Abdullah, Che Azurahanim Alresheedi, Mohammed Thamer Mahdi, Mohd Adzir A nanocomposite of titania-coated silica saturable absorber (TiO2–SiO2-SA) was fabricated via alkaline fusion and spin-coating. The TiO2–SiO2-SA possessed nonlinear saturable absorption and optical limiting effect with 30.35% modulation depth, 42.57 μJ/cm2 saturation fluence, and 0.0075 cm2/μJ two-photon absorption coefficient. By designing a ring cavity erbium-doped fiber laser in net normal dispersion regime and TiO2–SiO2-SA as mode-locker, a stable noise-like pulse (NLP) at 1.57 μm with ∼21 nm spectral bandwidth was initiated at low threshold power of 22.6 mW, and maintained its operation at maximum pump power of 234 mW. A pulse spike of 587 fs riding on 4.47 ps pulse pedestal at 7.66 MHz repetition frequency confirmed its NLP regime. The generated NLP with TiO2–SiO2-SA was very stable and estimated damage threshold of at least 786 μJ/cm2 pumping fluence suggest its potential as one of next generation nanocomposite materials for ultrafast photonics. Elsevier 2023-06 Article PeerReviewed Mohd Yusoff, Norita and Lee, Han Kee and Ng, Eng Khoon and Rosli, Natrah Shafiqah and Che Abdullah, Che Azurahanim and Alresheedi, Mohammed Thamer and Mahdi, Mohd Adzir (2023) Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser. Journal of Luminescence, 258. art. no. 119779. pp. 1-10. ISSN 0022-2313; ESSN: 1872-7883 https://linkinghub.elsevier.com/retrieve/pii/S0022231323001126 10.1016/j.jlumin.2023.119779 |
| spellingShingle | Mohd Yusoff, Norita Lee, Han Kee Ng, Eng Khoon Rosli, Natrah Shafiqah Che Abdullah, Che Azurahanim Alresheedi, Mohammed Thamer Mahdi, Mohd Adzir Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title | Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title_full | Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title_fullStr | Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title_full_unstemmed | Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title_short | Titania-coated silica nanocomposite for L-band noise-like pulse fiber laser |
| title_sort | titania coated silica nanocomposite for l band noise like pulse fiber laser |
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