Cargando…
Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers
In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm. However, there are high requirements of the...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434403/ https://www.ncbi.nlm.nih.gov/pubmed/34500756 http://dx.doi.org/10.3390/molecules26175323 |
_version_ | 1783751591356006400 |
---|---|
author | Pei, Wenxi Li, Hao Cui, Yulong Zhou, Zhiyue Wang, Meng Wang, Zefeng |
author_facet | Pei, Wenxi Li, Hao Cui, Yulong Zhou, Zhiyue Wang, Meng Wang, Zefeng |
author_sort | Pei, Wenxi |
collection | PubMed |
description | In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm. However, there are high requirements of the pump for wavelength stability, tunability, laser linewidth, etc., due to the narrow absorption linewidth of gases. Here, we present the use of a narrow-linewidth, high-power fiber laser with a highly stable and precisely tunable wavelength at 2 μm for gas absorption. It was a master oscillator power-amplifier (MOPA) structure, consisting of a narrow-linewidth fiber seed and two stages of Thulium-doped fiber amplifiers (TDFAs). The seed wavelength was very stable and was precisely tuned from 1971.4 to 1971.8 nm by temperature. Both stages of the amplifiers were forward-pumping, and a maximum output power of 24.8 W was obtained, with a slope efficiency of about 50.5%. The measured laser linewidth was much narrower than the gas absorption linewidth and the wavelength stability was validated by HBr gas absorption in HCFs. If the seed is replaced, this MOPA laser can provide a versatile pump source for mid-infrared fiber gas lasers. |
format | Online Article Text |
id | pubmed-8434403 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84344032021-09-12 Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers Pei, Wenxi Li, Hao Cui, Yulong Zhou, Zhiyue Wang, Meng Wang, Zefeng Molecules Article In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm. However, there are high requirements of the pump for wavelength stability, tunability, laser linewidth, etc., due to the narrow absorption linewidth of gases. Here, we present the use of a narrow-linewidth, high-power fiber laser with a highly stable and precisely tunable wavelength at 2 μm for gas absorption. It was a master oscillator power-amplifier (MOPA) structure, consisting of a narrow-linewidth fiber seed and two stages of Thulium-doped fiber amplifiers (TDFAs). The seed wavelength was very stable and was precisely tuned from 1971.4 to 1971.8 nm by temperature. Both stages of the amplifiers were forward-pumping, and a maximum output power of 24.8 W was obtained, with a slope efficiency of about 50.5%. The measured laser linewidth was much narrower than the gas absorption linewidth and the wavelength stability was validated by HBr gas absorption in HCFs. If the seed is replaced, this MOPA laser can provide a versatile pump source for mid-infrared fiber gas lasers. MDPI 2021-09-01 /pmc/articles/PMC8434403/ /pubmed/34500756 http://dx.doi.org/10.3390/molecules26175323 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pei, Wenxi Li, Hao Cui, Yulong Zhou, Zhiyue Wang, Meng Wang, Zefeng Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title | Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title_full | Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title_fullStr | Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title_full_unstemmed | Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title_short | Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers |
title_sort | narrow-linewidth 2 μm all-fiber laser amplifier with a highly stable and precisely tunable wavelength for gas molecule absorption in photonic crystal hollow-core fibers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434403/ https://www.ncbi.nlm.nih.gov/pubmed/34500756 http://dx.doi.org/10.3390/molecules26175323 |
work_keys_str_mv | AT peiwenxi narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers AT lihao narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers AT cuiyulong narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers AT zhouzhiyue narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers AT wangmeng narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers AT wangzefeng narrowlinewidth2mmallfiberlaseramplifierwithahighlystableandpreciselytunablewavelengthforgasmoleculeabsorptioninphotoniccrystalhollowcorefibers |