A research team led by Dr. Huang Qing from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has developed a new method using low-frequency Raman spectroscopy to detect ...

This nonlinear phenomenon is caused by the Raman effect associated with the rotations of the gas molecules under the laser field, as schematically illustrated in the bottom panel.

The technique measures the energy shift in the scattered light ... This limitation can sometimes be mitigated by using lasers with different wavelengths or employing surface-enhanced Raman scattering ...

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