High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber
We report on demonstration of high energy pulse laser at 2 μm by employing a normal dispersion fiber attained by a waveguide dispersion engineering. The normal dispersion fiber has a W-type refractive index profile, with a Thulium(Tm)-doped core. In contrast to a strong anomalous dispersi...
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2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8861344/ |
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doaj-607c0437c54d42758276f7106338390f2021-04-05T16:55:22ZengIEEEIEEE Photonics Journal1943-06552019-01-0111611210.1109/JPHOT.2019.29459288861344High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped FiberYuhao Chen0https://orcid.org/0000-0003-1542-8483Shaoxiang Chen1Raghuraman Sidharthan2https://orcid.org/0000-0003-4017-9327Chen Jian Cheng3https://orcid.org/0000-0002-9784-495XKun Liu4Shreesha Rao5https://orcid.org/0000-0003-2007-0930Ole Bang6Qijie Wang7https://orcid.org/0000-0002-9910-1455Ding Yuan Tang8Seongwoo Yoo9School of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeDTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kongens Lyngby, DenmarkDTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kongens Lyngby, DenmarkSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeSch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, SingaporeSchool of Electrical and Electronic Engineering, Nanyang Technological University, SingaporeWe report on demonstration of high energy pulse laser at 2 μm by employing a normal dispersion fiber attained by a waveguide dispersion engineering. The normal dispersion fiber has a W-type refractive index profile, with a Thulium(Tm)-doped core. In contrast to a strong anomalous dispersion at 2 μm in a step-index fiber, the design allows strong waveguide dispersion that can generate normal dispersion at the Tm emission band. Mode area scalability of this fiber is discussed under the normal dispersion requirement. The Tm-doped fiber (TDF) is deployed in a ring cavity to produce mode-locked pulses near 2 μm. Subsequently, the pulse is amplified with more than 27 dB gain through the normal dispersion TDF. The output pulse energy reaches up to ~525 nJ at 1852 nm without pulse breaking due to the engineered dispersion. The achieved pulse energy is record high for all-fiber configuration near 2 μm, to our knowledge.https://ieeexplore.ieee.org/document/8861344/Specialty fiberfiber lasersThuliumultrashort pulsesdispersion shift. |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yuhao Chen Shaoxiang Chen Raghuraman Sidharthan Chen Jian Cheng Kun Liu Shreesha Rao Ole Bang Qijie Wang Ding Yuan Tang Seongwoo Yoo |
| spellingShingle |
Yuhao Chen Shaoxiang Chen Raghuraman Sidharthan Chen Jian Cheng Kun Liu Shreesha Rao Ole Bang Qijie Wang Ding Yuan Tang Seongwoo Yoo High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber IEEE Photonics Journal Specialty fiber fiber lasers Thulium ultrashort pulses dispersion shift. |
| author_facet |
Yuhao Chen Shaoxiang Chen Raghuraman Sidharthan Chen Jian Cheng Kun Liu Shreesha Rao Ole Bang Qijie Wang Ding Yuan Tang Seongwoo Yoo |
| author_sort |
Yuhao Chen |
| title |
High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber |
| title_short |
High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber |
| title_full |
High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber |
| title_fullStr |
High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber |
| title_full_unstemmed |
High Energy Ultrafast Laser at 2 μm Using Dispersion Engineered Thulium-Doped Fiber |
| title_sort |
high energy ultrafast laser at 2 μm using dispersion engineered thulium-doped fiber |
| publisher |
IEEE |
| series |
IEEE Photonics Journal |
| issn |
1943-0655 |
| publishDate |
2019-01-01 |
| description |
We report on demonstration of high energy pulse laser at 2 μm by employing a normal dispersion fiber attained by a waveguide dispersion engineering. The normal dispersion fiber has a W-type refractive index profile, with a Thulium(Tm)-doped core. In contrast to a strong anomalous dispersion at 2 μm in a step-index fiber, the design allows strong waveguide dispersion that can generate normal dispersion at the Tm emission band. Mode area scalability of this fiber is discussed under the normal dispersion requirement. The Tm-doped fiber (TDF) is deployed in a ring cavity to produce mode-locked pulses near 2 μm. Subsequently, the pulse is amplified with more than 27 dB gain through the normal dispersion TDF. The output pulse energy reaches up to ~525 nJ at 1852 nm without pulse breaking due to the engineered dispersion. The achieved pulse energy is record high for all-fiber configuration near 2 μm, to our knowledge. |
| topic |
Specialty fiber fiber lasers Thulium ultrashort pulses dispersion shift. |
| url |
https://ieeexplore.ieee.org/document/8861344/ |
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