Fig. 1 Basic principle for the greenhouse gas detection with air-lasing-based Raman spectroscopy. (IMAGE)

Ultrafast Science

Fig. 1 Basic principle for the greenhouse gas detection with air-lasing-based Raman spectroscopy.

Caption

Fig. 1 Basic principle for the greenhouse gas detection with air-lasing-based Raman spectroscopy. (a) The generation scheme of air lasing and coherent Raman scattering; (b) The original and broadened spectra of the pump laser; (c) The spectrum and spatial profile of air lasing.

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Ultrafast Science

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