Extreme Raman red shift using a nitrogen-filled hollow-core fibre (IMAGE)

Institut national de la recherche scientifique - INRS

Extreme Raman red shift using a nitrogen-filled hollow-core fibre

Caption

A laser optical pulse (blue) enters from the left into the hollow-core fibre filled with nitrogen gas (red molecules) and, along propagation, experiences a spectral broadening towards longer wavelengths, depicted as an orange output beam (right). 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.

Credit

Riccardo Piccoli (INRS)

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Give credit to Riccardo Piccoli (INRS)

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