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Fully referenced single-comb interferometry using optical sampling by laser-cavity tuning

机译:完全参考的单梳形干涉仪,使用激光腔调谐进行光学采样

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摘要

The correction of setup and laser instabilities in a single-comb interferometric measurement using optical sampling by laser-cavity tuning is investigated. A two-reference solution that allows full correction of the interferogram is presented. The technique is compared to a slightly simpler one-reference correction. For the one-reference case, all the subtleties involved in this partial correction and the dependence between the achievable measurement accuracy and the setup parameters are highlighted. The parameters considered are the comb bandwidth, the laser-frequency noise, the required spectral resolution, the cavity scan speed, and the length of the delay line. For both referencing approaches, experimental results using a fiber delay line of 10 km and a 100 MHz mode-locked laser with its repetition rate swept at 500 Hz are shown.
机译:研究了通过光腔调谐通过光学采样对单梳形干涉测量中的设置和激光不稳定性进行的校正。提出了可以完全校正干涉图的两参考解决方案。将该技术与稍微更简单的单参考校正进行了比较。对于单参考情况,突出显示了此部分校正中涉及的所有细微之处以及可实现的测量精度与设置参数之间的依赖性。所考虑的参数是梳齿带宽,激光频率噪声,所需的光谱分辨率,腔扫描速度和延迟线的长度。对于这两种参考方法,均显示了使用10 km光纤延迟线和100 MHz锁模激光器的实验结果,其重复率在500 Hz处扫描。

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