山东大学新一代半导体材料研究院, 山东大学晶体材料国家重点实验室, 济南
报道了脉冲半导体激光器侧面泵浦Nd:YAG同步声光调Q纳秒激光器。采用连续输出50 W的Nd:YAG侧面泵浦模块, 当半导体激光器泵浦脉宽250 μm、重复频率1 kHz、声光Q开关延时270 μm时, 实现了平均输出功率2.27 W、脉冲宽度71 ns的稳定调Q脉冲输出。
侧面泵浦 声光调Q 同步调制 side-pump acoustic-optic Q-switched synchronous modulation
1 中国科学院 电子学研究所 先进激光与探测技术部, 北京 100190
2 中国科学院大学 电子电气与通信工程学院, 北京 100049
为了斩断调Q脉冲拖尾, 提高激光器电光效率, 提出了一种在机械调Q射频激励波导CO2激光器中采用同步调制的激励方式。实验研究了同步调制信号对调Q脉冲拖尾长度、脉冲宽度、峰值功率和电光效率的影响。结果表明, 当同步调制信号截断时刻为-80μs时, 调制调Q脉冲拖尾长度最短, 为23μs; 当同步调制信号无激励时长为800μs时, 电光效率最高且为3%。采用同步调制的激励方式可以在有效斩断脉冲拖尾的同时保持脉冲宽度基本不变, 提高了激光器的峰值功率和电光效率。
激光技术 同步调制 机械调Q 射频CO2激光器 laser technique synchronous modulation mechanical Q-switched radio frequency excitated CO2 laser
Author Affiliations
Abstract
College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
Two compensating methods about solitons transmition systems at 40 Gb/s in a photonic crystal fiber are investigated. The maximum transmission distance of the system is calculated numerically by sliding filters and synchronic modulation technology. The maximum transmission distance increases evidently which occasionally is three times longer than before. The results show that the actions of high order dispersion, polarization mode dispersion, and high order nonlinearity are weakened by the two methods. The compensating effect of synchronic modulation technology is better than that of the other one. The capability of the compensated system is ameliorated, which is shown by eye patterns.
补偿 滑频滤波器 同步调制技术 眼图 光子晶体光纤 060.0060 Fiber optics and optical communications 190.0190 Nonlinear optics Chinese Optics Letters
2010, 8(5): 471
通过解在线同步调制的非线性耦合方程,揭示在线同步调制对偏振模色散补偿的原理;数值计算了在线同步调制对40Gbit/s脉冲传输的偏振模色散的补偿作用.结果表明,同步调制可使脉冲传输距离增大3倍,大大改善了脉冲传输性能,有效地对偏振模色散进行了补偿.
在线同步调制 偏振模色散 补偿
