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arXiv 0710.3404physics.optics
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使用稳定的光学频率梳的相干多外差光谱学

Coherent, multi-heterodyne spectroscopy using stabilized optical frequency combs

Ian Coddington, William C. Swann, Nathan R. Newbury

摘要:

利用窄线宽光纤频率梳的宽带、相干特性,通过多外差光谱法测量分子气体的全复谱。我们测量了155,000个单独的频率梳状线中的每一个在穿过氰化氢气体后所经历的吸收和相移,这些频率梳状线间隔100 MHz,跨度从1495 nm到1620 nm。测量的相位谱符合吸收谱的Kramers-Kronig变换。该技术可以在宽带宽上快速地提供全复频谱,并且具有赫兹级的精度。

英文摘要:

The broadband, coherent nature of narrow-linewidth fiber frequency combs is exploited to measure the full complex spectrum of a molecular gas through multi-heterodyne spectroscopy. We measure the absorption and phase shift experienced by each of 155,000 individual frequency comb lines, spaced by 100 MHz and spanning from 1495 nm to 1620 nm, after passing through a hydrogen cyanide gas. The measured phase spectrum agrees with Kramers-Kronig transformation of the absorption spectrum. This technique can provide a full complex spectrum rapidly, over wide bandwidths, and with hertz-level accuracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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