Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber
This work presents a tapered fiber decorated with bulk α-alumina with 4.08% modulation depth and 21.67 MW/cm2 saturation intensity which was responsible to induce noise-like pulse (NLP) in an “eye-safe” wavelength region. The light-matter interaction within evanescent field of ultrathin tapered fibe...
| Main Authors: | , , , , , |
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| Format: | Article |
| Published: |
Elsevier
2023
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| Online Access: | http://psasir.upm.edu.my/id/eprint/108898/ |
| _version_ | 1848865230962032640 |
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| author | Mohd Yusoff, Norita Mohamed Ahmed, Mahmoud Hazzaa Ng, Eng Khoon Alresheedi, Mohammed Thamer Mayzan, Mohd Zul Hilmi Mahdi, Mohd Adzir |
| author_facet | Mohd Yusoff, Norita Mohamed Ahmed, Mahmoud Hazzaa Ng, Eng Khoon Alresheedi, Mohammed Thamer Mayzan, Mohd Zul Hilmi Mahdi, Mohd Adzir |
| author_sort | Mohd Yusoff, Norita |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This work presents a tapered fiber decorated with bulk α-alumina with 4.08% modulation depth and 21.67 MW/cm2 saturation intensity which was responsible to induce noise-like pulse (NLP) in an “eye-safe” wavelength region. The light-matter interaction within evanescent field of ultrathin tapered fiber established NLP in a ring configuration of thulium-doped fiber laser with a broad spectral bandwidth of 45 nm centered at 1948 nm wavelength. The NLP was emitted at 11.36 MHz repetition rate in a net anomalous laser cavity. The generated pulse had a maximum pulse energy of 2.46 nJ at 1587 mW pumping power. The robustness of the NLP performance was validated with 3 h stability test, which opens new possibilities for future research of this material in the wavelength of exceeding 1.9 μm. |
| first_indexed | 2025-11-15T14:01:25Z |
| format | Article |
| id | upm-108898 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:01:25Z |
| publishDate | 2023 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1088982024-09-26T07:56:19Z http://psasir.upm.edu.my/id/eprint/108898/ Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber Mohd Yusoff, Norita Mohamed Ahmed, Mahmoud Hazzaa Ng, Eng Khoon Alresheedi, Mohammed Thamer Mayzan, Mohd Zul Hilmi Mahdi, Mohd Adzir This work presents a tapered fiber decorated with bulk α-alumina with 4.08% modulation depth and 21.67 MW/cm2 saturation intensity which was responsible to induce noise-like pulse (NLP) in an “eye-safe” wavelength region. The light-matter interaction within evanescent field of ultrathin tapered fiber established NLP in a ring configuration of thulium-doped fiber laser with a broad spectral bandwidth of 45 nm centered at 1948 nm wavelength. The NLP was emitted at 11.36 MHz repetition rate in a net anomalous laser cavity. The generated pulse had a maximum pulse energy of 2.46 nJ at 1587 mW pumping power. The robustness of the NLP performance was validated with 3 h stability test, which opens new possibilities for future research of this material in the wavelength of exceeding 1.9 μm. Elsevier 2023 Article PeerReviewed Mohd Yusoff, Norita and Mohamed Ahmed, Mahmoud Hazzaa and Ng, Eng Khoon and Alresheedi, Mohammed Thamer and Mayzan, Mohd Zul Hilmi and Mahdi, Mohd Adzir (2023) Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber. Results in Physics, 52. art. no. 106843. pp. 1-9. ISSN 2211-3797 https://linkinghub.elsevier.com/retrieve/pii/S2211379723006368 doi:10.1016/j.rinp.2023.106843 |
| spellingShingle | Mohd Yusoff, Norita Mohamed Ahmed, Mahmoud Hazzaa Ng, Eng Khoon Alresheedi, Mohammed Thamer Mayzan, Mohd Zul Hilmi Mahdi, Mohd Adzir Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title | Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title_full | Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title_fullStr | Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title_full_unstemmed | Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title_short | Noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| title_sort | noise-like pulse generation in 1.95 µm region using bulk α-alumina saturable absorber |
| url | http://psasir.upm.edu.my/id/eprint/108898/ http://psasir.upm.edu.my/id/eprint/108898/ http://psasir.upm.edu.my/id/eprint/108898/ |