Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers
We report here a high-power, highly efficient, wavelength-tunable nanosecond pulsed 1.7 μm fiber laser based on hydrogen-filled hollow-core photonic crystal fibers (HC-PCFs) by rotational stimulated Raman scattering. When a 9-meter-long HC-PCF filled with 30 bar hydrogen is pumped by a homemade tuna...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/1/32 |
| _version_ | 1827698885489852416 |
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| author | Hao Li Wenxi Pei Wei Huang Meng Wang Zefeng Wang |
| author_facet | Hao Li Wenxi Pei Wei Huang Meng Wang Zefeng Wang |
| author_sort | Hao Li |
| collection | DOAJ |
| description | We report here a high-power, highly efficient, wavelength-tunable nanosecond pulsed 1.7 μm fiber laser based on hydrogen-filled hollow-core photonic crystal fibers (HC-PCFs) by rotational stimulated Raman scattering. When a 9-meter-long HC-PCF filled with 30 bar hydrogen is pumped by a homemade tunable 1.5 μm pulsed fiber amplifier, the maximum average Stokes power of 3.3 W at 1705 nm is obtained with a slope efficiency of 84%, and the slope efficiency achieves the highest recorded value for 1.7 μm pulsed fiber lasers. When the pump pulse repetition frequency is 1.3 MHz with a pulse width of approximately 15 ns, the average output power is higher than 3 W over the whole wavelength tunable range from 1693 nm to 1705 nm, and the slope efficiency is higher than 80%. A steady-state theoretical model is used to achieve the maximum Stokes power in hydrogen-filled HC-PCFs, and the simulation results accord well with the experiments. This work presents a new opportunity for highly efficient tunable pulsed fiber lasers at the 1.7 μm band. |
| first_indexed | 2024-03-10T13:39:19Z |
| format | Article |
| id | doaj.art-056064a2e8714de5b3cadf00f56fb6b3 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T13:39:19Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-056064a2e8714de5b3cadf00f56fb6b32023-11-21T03:11:03ZengMDPI AGCrystals2073-43522020-12-011113210.3390/cryst11010032Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal FibersHao Li0Wenxi Pei1Wei Huang2Meng Wang3Zefeng Wang4College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaWe report here a high-power, highly efficient, wavelength-tunable nanosecond pulsed 1.7 μm fiber laser based on hydrogen-filled hollow-core photonic crystal fibers (HC-PCFs) by rotational stimulated Raman scattering. When a 9-meter-long HC-PCF filled with 30 bar hydrogen is pumped by a homemade tunable 1.5 μm pulsed fiber amplifier, the maximum average Stokes power of 3.3 W at 1705 nm is obtained with a slope efficiency of 84%, and the slope efficiency achieves the highest recorded value for 1.7 μm pulsed fiber lasers. When the pump pulse repetition frequency is 1.3 MHz with a pulse width of approximately 15 ns, the average output power is higher than 3 W over the whole wavelength tunable range from 1693 nm to 1705 nm, and the slope efficiency is higher than 80%. A steady-state theoretical model is used to achieve the maximum Stokes power in hydrogen-filled HC-PCFs, and the simulation results accord well with the experiments. This work presents a new opportunity for highly efficient tunable pulsed fiber lasers at the 1.7 μm band.https://www.mdpi.com/2073-4352/11/1/32simulated Raman scatteringfiber lasershollow-core photonic crystal fibersRaman lasers |
| spellingShingle | Hao Li Wenxi Pei Wei Huang Meng Wang Zefeng Wang Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers Crystals simulated Raman scattering fiber lasers hollow-core photonic crystal fibers Raman lasers |
| title | Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers |
| title_full | Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers |
| title_fullStr | Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers |
| title_full_unstemmed | Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers |
| title_short | Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H<sub>2</sub>-Filled Hollow-Core Photonic Crystal Fibers |
| title_sort | highly efficient nanosecond 1 7 μm fiber gas raman laser by h sub 2 sub filled hollow core photonic crystal fibers |
| topic | simulated Raman scattering fiber lasers hollow-core photonic crystal fibers Raman lasers |
| url | https://www.mdpi.com/2073-4352/11/1/32 |
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