Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate
We demonstrate here an environmentally stable and compact Er-doped fiber laser system capable of delivering sub-100-fs pulse duration with discontinuous selectable repetition rate from 10 to 70 MHz. This laser source employs a SESAM harmonic mode-locked soliton laser to facilitate tunable repetition...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9072555/ |
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| author | Hanmei Fu Qiang Hao Hang Gong Peng Luo Heping Zeng |
| author_facet | Hanmei Fu Qiang Hao Hang Gong Peng Luo Heping Zeng |
| author_sort | Hanmei Fu |
| collection | DOAJ |
| description | We demonstrate here an environmentally stable and compact Er-doped fiber laser system capable of delivering sub-100-fs pulse duration with discontinuous selectable repetition rate from 10 to 70 MHz. This laser source employs a SESAM harmonic mode-locked soliton laser to facilitate tunable repetition rate. A single-mode-fiber (SMF) amplifier and a double-cladding-fiber (DCF) amplifier (both with double-pass configuration) bridged by a three-stage YVO<sub>4</sub>-based divider are used to manage the dispersion map and boost the seed pulses. With the help of ×8 replicas, the seed pulses are simultaneously amplified and compressed with 90% recombining efficiency, generating 4.60-nJ pulse energy at 10 MHz and 6.13-nJ pulse energy at 70 MHz. The main advantage of the proposed laser system is that when pulse repetition rate is switched on-demand, the pulse duration can be kept almost unchanged only by simply adjusting the pump powers of the fiber amplifiers, instead of changing any optical device (the spacing between gratings or the length of fibers). |
| format | Article |
| id | doaj-art-eac23bcc07184efb81cb90d93d071528 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-eac23bcc07184efb81cb90d93d0715282025-08-20T02:41:55ZengIEEEIEEE Photonics Journal1943-06552020-01-011231710.1109/JPHOT.2020.29884199072555Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition RateHanmei Fu0https://orcid.org/0000-0002-6240-9819Qiang Hao1https://orcid.org/0000-0001-5108-0520Hang Gong2Peng Luo3Heping Zeng4https://orcid.org/0000-0002-2357-4440Ministry of Education, School of Optical Electrical and Computer Engineering, Shanghai Key Laboratory of Modern Optical Systems and Engineering Research Center of Optical Instrument and Systems, University of Shanghai for Science and Technology, Shanghai, ChinaMinistry of Education, School of Optical Electrical and Computer Engineering, Shanghai Key Laboratory of Modern Optical Systems and Engineering Research Center of Optical Instrument and Systems, University of Shanghai for Science and Technology, Shanghai, ChinaMinistry of Education, School of Optical Electrical and Computer Engineering, Shanghai Key Laboratory of Modern Optical Systems and Engineering Research Center of Optical Instrument and Systems, University of Shanghai for Science and Technology, Shanghai, ChinaGuangdong Langyan Science and Technology Co., LTD, Dongguan, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaWe demonstrate here an environmentally stable and compact Er-doped fiber laser system capable of delivering sub-100-fs pulse duration with discontinuous selectable repetition rate from 10 to 70 MHz. This laser source employs a SESAM harmonic mode-locked soliton laser to facilitate tunable repetition rate. A single-mode-fiber (SMF) amplifier and a double-cladding-fiber (DCF) amplifier (both with double-pass configuration) bridged by a three-stage YVO<sub>4</sub>-based divider are used to manage the dispersion map and boost the seed pulses. With the help of ×8 replicas, the seed pulses are simultaneously amplified and compressed with 90% recombining efficiency, generating 4.60-nJ pulse energy at 10 MHz and 6.13-nJ pulse energy at 70 MHz. The main advantage of the proposed laser system is that when pulse repetition rate is switched on-demand, the pulse duration can be kept almost unchanged only by simply adjusting the pump powers of the fiber amplifiers, instead of changing any optical device (the spacing between gratings or the length of fibers).https://ieeexplore.ieee.org/document/9072555/Mode-locked Laserultrafast laserfiber amplifierstunable repetition rate |
| spellingShingle | Hanmei Fu Qiang Hao Hang Gong Peng Luo Heping Zeng Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate IEEE Photonics Journal Mode-locked Laser ultrafast laser fiber amplifiers tunable repetition rate |
| title | Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate |
| title_full | Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate |
| title_fullStr | Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate |
| title_full_unstemmed | Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate |
| title_short | Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate |
| title_sort | environmentally stable 1 56 x03bc m femtosecond laser system with discontinuous selectable repetition rate |
| topic | Mode-locked Laser ultrafast laser fiber amplifiers tunable repetition rate |
| url | https://ieeexplore.ieee.org/document/9072555/ |
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