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| 全光纤瓦级纳秒脉冲掺Yb放大器 | |
| 引用本文： | 刘丰年,徐玲玲,范万德,黄榜才,姜明顺,刘波,开桂云,袁树忠.全光纤瓦级纳秒脉冲掺Yb放大器[J].光子学报,2009,38(12). |
| 作者姓名： | 刘丰年 徐玲玲 范万德 黄榜才 姜明顺 刘波 开桂云 袁树忠 |
| 作者单位： | 1. 南开大学现代光学研究所,光电教育部重点实验室,天津,300071 2. 南开大学物理科学学院,光电信息科学系,天津,300071 3. 南开大学现代光学研究所,光电教育部重点实验室,天津,300071;中国电子科技集团公司第46,研究所,天津,300220 4. 山东大学,控制学院,光纤传感实验室,济南,250061 |
| 基金项目： | 国家自然科学基金，国家973计划项目，天津自然基金项目 |
| 摘 要： | 采用单模放大和包层抽运放大的级联方式,在主振荡功率放大系统中,将平均功率0.5 mW、脉宽20 ns以及重复频率为50 kHz的光脉冲安全放大到平均功率0.6 W、峰值功率600 W的脉冲输出.相应增益为30.8 dB.放大输出的脉冲信号信噪比为30 dB,脉冲形状基本没有发生畸变.在前置放大结构中抽运光通过级联熔融拉锥型波分复用器耦合,有效确保了抽运源(976 nm)的正常工作. |
| 关 键 词： | 光纤放大器 级联波分复用器 脉冲放大 隔离度 信噪比 信号增益 |
All-fiber Watt-level Nanosecond Pulsed Yb-doped Fiber Amplifier |
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| LIU Feng-nian,XU Ling-ling,FAN Wan-de,HUANG Bang-cai,JIANG Ming-shun,LIU Bo,KAI Gui-yun,YUAN Shu-zhong.All-fiber Watt-level Nanosecond Pulsed Yb-doped Fiber Amplifier[J].Acta Photonica Sinica,2009,38(12). | |
| Authors: | LIU Feng-nian XU Ling-ling FAN Wan-de HUANG Bang-cai JIANG Ming-shun LIU Bo KAI Gui-yun YUAN Shu-zhong |
| Abstract: | The fiber-based amplification of a commercially packaged,fiber pigtailed pulsed diode laser operating at wavelength of 1 064 nm (bandwidth of 0.45 nm) was reported.The cascaded Yb-doped fiber amplifier could operate safely by using cascaded fused wavelength division multiplexing (WDM) in each single-mode amplification stage.The total isolation of cascaded WDM could protect the laser diodes from being destroyed by feedback of pump/signal power.At repetition rate of 50 kHz,pulse duration of 20 ns and average power of 0.5 mW,output power up to 0.6 W and peak power up to 600 W were obtained,with a high signal to noise ratio of 30 dB.The gain of the whole system is 30.8 dB and pulse distortion is not been observed. |
| Keywords: | Fiber amplifier Cascaded wavelength division multiplexing Pulse amplification Isolation Signal to noise ratio Gain of signal |
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