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Highly-stable monolithic femtosecond Yb-fiber laser system based on photonic crystal fibers

机译:基于光子晶体光纤的高稳定单片飞秒Yb光纤激光器系统

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摘要

A self-starting, passively stabilized, monolithic all polarizationmaintaining femtosecond Yb-fiber master oscillator / power amplifier with very high operational and environmental stability is demonstrated. The system is based on the use of two different photonic crystal fibers. One is used in the oscillator cavity for dispersion balancing and nonlinear optical limiting, and another one is used for low nonlinearity final pulse recompression. The chirped-pulse amplification and recompression of the 232-fs, 45-pJ/pulse oscillator output yields a final direct fiber-end delivery of 7.3-nJ energy pulses of around 297 fs duration. Our laser shows exceptional stability. No Q-switched modelocking events were detected during 4-days long observation. An average fluctuation of only 7.85 · 10−4 over the mean output power was determined as a result of more than 6-hours long measurement. The laser is stable towards mechanical disturbances, and maintains stable modelocking in the temperature range of at least 10 – 40 0C.
机译:演示了一种具有非常高的操作和环境稳定性的自启动,被动稳定的单片全极化保持飞秒Yb光纤主振荡器/功率放大器。该系统基于使用两种不同的光子晶体光纤。一种在振荡器腔中用于色散平衡和非线性光学限制,另一种用于低非线性最终脉冲再压缩。 232-fs,45-pJ /脉冲振荡器输出的脉冲放大和再压缩可在大约297fs的持续时间内直接传送7.3nJ能量脉冲的光纤端。我们的激光器显示出卓越的稳定性。在为期4天的观察中未检测到Q转换的对撞事件。经过6个小时以上的测量,确定平均输出功率的平均波动仅为7.85·10−4。激光对机械干扰稳定,并且在至少10 – 40 0C的温度范围内保持稳定的对接。

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