Enhancing sensitivity in absorption spectroscopy using a scattering cavity.

Enhancing sensitivity in absorption spectroscopy using a scattering cavity.
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DOI:
10.1038/s41598-021-94028-4
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发表时间:
2021-07-21
期刊:
影响因子:
4.6
通讯作者:
Park Y
Park Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Oh J;Lee K;Park Y

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Absorption spectroscopy is widely used to detect samples with spectral specificity. Here, we propose and demonstrate a method for enhancing the sensitivity of absorption spectroscopy. Exploiting multiple light scattering generated by a boron nitride (h-BN) scattering cavity, the optical path lengths of light inside a diffusive reflective cavity are significantly increased, resulting in more than ten times enhancement of sensitivity in absorption spectroscopy. We demonstrate highly sensitive spectral measurements of low concentrations of malachite green and crystal violet aqueous solutions. Because this method only requires the addition of a scattering cavity to existing absorption spectroscopy, it is expected to enable immediate and widespread applications in various fields, from analytical chemistry to environmental sciences.
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