laser-induced thermal-acoustic velocimetry
laser-induced thermal-acoustic velocimetry with heterodyne detection
heterodyne LITA velocimetry
2009-06-30T09:40:59Z
CHMO:0002053
https://orcid.org/0000-0001-5985-7429
heterodyne laser-induced thermal acoustic velocimetry
A method for determining the velocity of a sample flow using two coherent intersecting pulsed laser beams to create a density grating in the sample and a third, continuous, laser beam to detect the Doppler shift in the signal. Heterodyne signal detection (non-linear mixing with radiation of a reference frequency) is employed to recover the Doppler shift.