| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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All-Fiber Gain-Switched Thulium-Doped Fiber Laser Pumped by 1.558μm Laser |
| ZHOU Ren-Lai**, ZHAO Jie, YUANG-Chi, CHEN Zhao-Yu, JU You-Lun, WANG Yue-Zhu |
| National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150080 |
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| Cite this article: |
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ZHOU Ren-Lai, ZHAO Jie, YUANG-Chi et al 2012 Chin. Phys. Lett. 29 064201 |
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Abstract We present an all-fiber gain-switched thulium (Tm) doped fiber laser operating in the eye-safe region at 1940 nm. The fibre Bragg gratings (FBGs) inscribed by phase mask technology are used as cavity mirrors, and the transmission spectra of FBGs are also measured. The output characteristics are studied at pulse repetition frequencies of 10, 20 and 30 kHz, and the maximum output powers of 28.9, 67.0 and 71.0 mW are achieved under incident pump powers of 122, 247 and 250 mW. The narrowest pulse width of 29 ns and shortest pulse built-time of 140 ns are obtained at 10 kHz. The relation between pulse built-time and cavity length are discussed.
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Received: 11 November 2011
Published: 31 May 2012
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.60.Lh
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(Efficiency, stability, gain, and other operational parameters)
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