Optical techniques that permit nondestructive probing of interfacial dynamics of various media are of key importance in numerous applications such as ellipsometry, mirage effect, and all-optical switching. Characterization of the various phases of microjet droplet formation yields important information for volume control, uniformity, velocity, and rate. The ringing of the meniscus and the associated relaxation time that occurs after droplet breakoff affect subsequent drop formation and is an indicator of the physical properties of the fluid. Using laser reflectometry, we present an analysis of the meniscus oscillations in an orifice of a piezoelectric microjet.
© 2009 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: July 23, 2009
Revised Manuscript: August 17, 2009
Manuscript Accepted: August 19, 2009
Published: October 8, 2009
R. H. Farahi, A. Passian, Y. K. Jones, L. Tetard, A. L. Lereu, and T. G. Thundat, "Laser reflectometry of submegahertz liquid meniscus ringing," Opt. Lett. 34, 3148-3150 (2009)