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Observation and measurement of molecular flow using stimulated Raman gain spectroscopy

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3 Author(s)
Herring, G.C. ; Colorado State University, Fort Collins, CO, USA ; Fairbank, W.M. ; She, C.

We report the observation and measurement of frequency shifts in stimulated Raman gain spectroscopy (SRGS) resulting from subsonic molecular nitrogen flows emerging from a simple nozzle. The flow velocity in the region of the measurement was determined to be 145 m/s with an accuracy of ±30 m/s. It is expected that significantly better flow-velocity resolution will be obtained in future experiments using inverse Raman scattering.

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Quantum Electronics, IEEE Journal of  (Volume:17 ,  Issue: 10 )