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Characterization of timing jitter spectra in free-running mode-locked lasers with 340 dB dynamic range over 10 decades of Fourier frequency

机译:在几十个傅立叶频率上具有340 dB动态范围的自由运行锁模激光器中的时序抖动频谱的表征

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摘要

We demonstrate a method that enables accurate timing jitter spectral-density characterization of free-running mode-locked laser oscillators over more than 10 decades of Fourier frequency from mHz to tens of MHz range. The method is based on analyzing both the input voltage noise to the slave laser and the output voltage noise from the balanced optical cross-correlator (BOC), when two mode-locked lasers are synchronized in repetition rate by the BOC. As a demonstration experiment, timing jitter spectrum of a free-running mode-locked Er-fiber laser with a dynamic range of >340 dB is measured over Fourier frequency ranging from 1 mHz to 38.5 MHz (Nyquist frequency). The demonstrated method can resolve different noise mechanisms that cause specific jitter characteristics in free-running mode-locked laser oscillators for a vast range of time scales from <100 ns to >1000 s. (C) 2015 Optical Society of America
机译:我们演示了一种方法,该方法能够在从mHz到数十MHz范围的傅立叶频率超过10十年的时间内,对自由运行的锁模激光振荡器进行精确的时序抖动频谱密度表征。当两个锁模激光器以重复频率同步时,该方法基于对从激光器的输入电压噪声和平衡光学互相关器(BOC)的输出电压噪声的分析。作为演示实验,在1 mHz至38.5 MHz的傅立叶频率(奈奎斯特频率)上测量了动态范围大于340 dB的自由运行锁模Er光纤激光器的定时抖动频谱。所证明的方法可以解决在<100 ns至> 1000 s的较大时间范围内自由运行的锁模激光振荡器中引起特定抖动特性的不同噪声机制。 (C)2015年美国眼镜学会

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