光学学报, 2007, 27 (11): 2003, 网络出版: 2007-11-12   

单偏振控制器环形腔光纤激光器实验研究

Experimental Study of Fiber Ring Laser with Single Polarization Controller
作者单位
1 华南师范大学信息光电子科技学院光子信息技术广东省高校重点实验室, 广州 510006
2 华南师范大学物理与电信工程学院, 广州 510006
摘要
理论分析了非线性偏振旋转环形腔作为类饱和可吸收体获得脉冲的物理机理。在光纤环形腔结构中,采用单个偏振控制器实现了非线性偏振旋转锁模,直接获得了脉冲宽度为131 fs的超短脉冲输出。实验中,采用性能稳定的976 nm半导体二极管激光器作为抽运源,使用高掺杂浓度的Er3+光纤为增益介质,通过调节偏振控制器,获得了光谱谱宽(3 dB带宽处)为23.5 nm的稳定锁模脉冲输出。脉冲中心波长为1535.9 nm,平均功率为5.91 mW,脉冲重复率为11.20 MHz。
Abstract
Physical mechanism of using nonlinear polarization rotation as saturable absorber to obtain pulse is analyzed theoretically.Experimental study of improved femtosecond fiber ring laser is reported. A fiber ring laser with highly Er3+-doped fiber as gain medium is demonstrated, 976 nm laser diode (LD) laser is used as pump source, and in the fiber ring cavity, nolinear polarization rotation mode-locking is realized by adopting single polarization controller. By tuning polarization controller , stable mode-locked pulses centered at 1535.9 nm with 23.5 nm bandwidth at 3 dB, 131 fs duration and an average output power as high as 5.91 mW are successfully obtained at the repetition rate of 11.20 MHz.
参考文献

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申民常, 徐文成, 陈伟成, 宋方, 冯杰, 刘颂豪. 单偏振控制器环形腔光纤激光器实验研究[J]. 光学学报, 2007, 27(11): 2003. 申民常, 徐文成, 陈伟成, 宋方, 冯杰, 刘颂豪. Experimental Study of Fiber Ring Laser with Single Polarization Controller[J]. Acta Optica Sinica, 2007, 27(11): 2003.

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