| Scaling of Yb-doped photonic crystal fiber to 200 μm core diameter for high beam quality laser output |
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| 引用本文： | 孟阔,祝连庆,骆飞.Scaling of Yb-doped photonic crystal fiber to 200 μm core diameter for high beam quality laser output[J].中国物理 B,2017,26(5):54212-054212. |
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| 作者姓名： | 孟阔 祝连庆 骆飞 |
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| 作者单位： | Beijing Engineering Research Center of Optoelectronics Information and Instrument, Beijing Key Laboratory of Optoelectronic Measurement Technology, Beijing Laboratory for Biomedical Detection Technology and Instrument, Beijing Information Science and Technology University, Beijing 100192, China |
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| 基金项目： | Project supported by the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. PCSIRT: 1212), the Key Grant Science and Technology Planning Project of Beijing, China (Grant Nos. PXM2013_014224_000077 and PXM2012_014224_000019), and the Science and Technology Planning Project of Beijing Municipal Commission of Education, China (Grant No. KM201611232008). |
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| 摘 要： | The rare earth-doped active fibers not only have ten thousands of square-micron core-area but also deliver a laser with near-diffraction-limited beam quality. However, they have been studied little. In this paper, we design a 200-μm-corediameter Yb~(3+)-doped photonic crystal fiber with a large pitch in the air-hole cladding region. Simulations demonstrate that only fundamental mode(FM) with a mode field area(MFA) of ～ 28000 μm~2 can be amplified and propagated at the gain saturation, and the beam quality M~2 is about 1.5. It is predicted that almost 105 m J single-pulse energy is available from such a 1.5-meter-length fiber.
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| 收稿时间： | 2016-07-15 |
Scaling of Yb-doped photonic crystal fiber to 200 μm core diameter for high beam quality laser output |
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| Institution: | Beijing Engineering Research Center of Optoelectronics Information and Instrument, Beijing Key Laboratory of Optoelectronic Measurement Technology, Beijing Laboratory for Biomedical Detection Technology and Instrument, Beijing Information Science and Technology University, Beijing 100192, China |
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| Abstract: | The rare earth-doped active fibers not only have ten thousands of square-micron core-area but also deliver a laser with near-diffraction-limited beam quality. However, they have been studied little. In this paper, we design a 200-μm-core-diameter Yb3+-doped photonic crystal fiber with a large pitch in the air-hole cladding region. Simulations demonstrate that only fundamental mode (FM) with a mode field area (MFA) of ～28000 μm2 can be amplified and propagated at the gain saturation, and the beam quality M2 is about 1.5. It is predicted that almost 105 mJ single-pulse energy is available from such a 1.5-meter-length fiber. |
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| Keywords: | photonic crystal fiber (PCF) fundamental mode (FM) very large mode area (VLMA) fiber amplifier |
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