Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power
Kilowatt-level high-efficiency all-fiberized Raman fiber amplifier based on pure passive fiber is proposed for the first time in this paper. The laser system is established on master oscillator power amplification configuration, while a piece of graded-index passive fiber is utilized as Stokes shift...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8642309/ |
| _version_ | 1818641743680110592 |
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| author | Yizhu Chen Jinyong Leng Hu Xiao Tianfu Yao Pu Zhou |
| author_facet | Yizhu Chen Jinyong Leng Hu Xiao Tianfu Yao Pu Zhou |
| author_sort | Yizhu Chen |
| collection | DOAJ |
| description | Kilowatt-level high-efficiency all-fiberized Raman fiber amplifier based on pure passive fiber is proposed for the first time in this paper. The laser system is established on master oscillator power amplification configuration, while a piece of graded-index passive fiber is utilized as Stokes shifting as well as gain medium, which is entirely irrelevant to the rare-earth-doped gain mechanism. When the pump power is 1368.8 W, we obtained 1002.3-W continuous-wave laser power at 1060 nm with the corresponding optical-to-optical efficiency of 84%. The beam parameter M<sup>2</sup> improves from 9.17 of the pump laser to 5.06 of the signal laser through the amplification process, and the brightness enhancement is about 2.57 at maximum output power as a consequence of the beam clean-up process in the graded-index fiber. To the best of our knowledge, we have demonstrated the first kilowatt-level high-efficiency Raman fiber amplifier based on pure passive fiber with brightness enhancement. |
| first_indexed | 2024-12-16T23:32:01Z |
| format | Article |
| id | doaj.art-262ba657320a49f59860917b61c1e7ea |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T23:32:01Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-262ba657320a49f59860917b61c1e7ea2022-12-21T22:11:51ZengIEEEIEEE Access2169-35362019-01-017283342833910.1109/ACCESS.2019.28994528642309Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt PowerYizhu Chen0https://orcid.org/0000-0002-2058-8871Jinyong Leng1Hu Xiao2Tianfu Yao3Pu Zhou4College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaKilowatt-level high-efficiency all-fiberized Raman fiber amplifier based on pure passive fiber is proposed for the first time in this paper. The laser system is established on master oscillator power amplification configuration, while a piece of graded-index passive fiber is utilized as Stokes shifting as well as gain medium, which is entirely irrelevant to the rare-earth-doped gain mechanism. When the pump power is 1368.8 W, we obtained 1002.3-W continuous-wave laser power at 1060 nm with the corresponding optical-to-optical efficiency of 84%. The beam parameter M<sup>2</sup> improves from 9.17 of the pump laser to 5.06 of the signal laser through the amplification process, and the brightness enhancement is about 2.57 at maximum output power as a consequence of the beam clean-up process in the graded-index fiber. To the best of our knowledge, we have demonstrated the first kilowatt-level high-efficiency Raman fiber amplifier based on pure passive fiber with brightness enhancement.https://ieeexplore.ieee.org/document/8642309/Fiber lasersfiber nonlinear opticshigh power amplifiersRaman scattering |
| spellingShingle | Yizhu Chen Jinyong Leng Hu Xiao Tianfu Yao Pu Zhou Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power IEEE Access Fiber lasers fiber nonlinear optics high power amplifiers Raman scattering |
| title | Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power |
| title_full | Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power |
| title_fullStr | Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power |
| title_full_unstemmed | Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power |
| title_short | Pure Passive Fiber Enabled Highly Efficient Raman Fiber Amplifier With Record Kilowatt Power |
| title_sort | pure passive fiber enabled highly efficient raman fiber amplifier with record kilowatt power |
| topic | Fiber lasers fiber nonlinear optics high power amplifiers Raman scattering |
| url | https://ieeexplore.ieee.org/document/8642309/ |
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