All-Fiber Laser With Agile Mode-Switching Capability Through Intra-Cavity Conversion
Agile mode switching between LP<sub>01</sub> and LP<sub>11</sub> modes in an all-fiber laser is demonstrated by exploiting an acoustically induced fiber grating within the laser cavity. The laser exploits a cladding pump configuration and can deliver up to 5.85 W of stable ou...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8691732/ |
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| Summary: | Agile mode switching between LP<sub>01</sub> and LP<sub>11</sub> modes in an all-fiber laser is demonstrated by exploiting an acoustically induced fiber grating within the laser cavity. The laser exploits a cladding pump configuration and can deliver up to 5.85 W of stable output power in LP<sub>11</sub> mode at 1070.07 nm and 6.06 W in LP<sub>01</sub> mode at 1070.48 nm, with a slope efficiency near 50%. Complete mode-switching speed with 250 Hz and partial mode-switching speed with 1 kHz are demonstrated. Based on the obtained switching time between LP<sub>11</sub> and LP<sub>01</sub> mode, the maximum complete mode-switching speed is calculated to be ∼555.56 Hz. Moreover, variable output beam profiles could be obtained by adjusting the frequency of the modulation signal applied on the acoustically induced fiber grating. This paper could provide an example of realizing a high-power, mode-switchable fiber laser source for practical use. |
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| ISSN: | 1943-0655 |