Self-mixing laser Doppler velocimetry using a dual-polarization Yb:Er-doped phosphate glass laser is investigated. The two orthogonally polarized eigenstates emitted simultaneously by the laser oscillator are employed to perform a heterodyne detection, allowing a complete characterization of the lateral sidebands generated via the optical feedback around the beating peak. Two different experime...

We studied the grid-generated turbulence by using Particle Image Velocimetry (PIV) technique. test on this already well flow new ways of analyzing spatially resolved PIV data, such as spatial spectra and structure functions. compare some characteristics with results Laser Doppler Anemometry (LDA).

Two frequency planar Doppler Velocimetry (2ν-PDV) is a modification of the Planar Doppler Velocimetry (PDV) method that allows velocity measurements to be made, quickly and non intrusively, across a plane defined by a laser light sheet. In 2ν-PDV the flow is illuminated sequentially with two optical frequencies, separated by about 700MHz. A single CCD viewing through an iodine absorption cell i...

Administration of low doses of Escherichia coli endotoxin [a lipopolysaccharide (LPS)] to humans enables the study of inflammatory mechanisms. The purpose of the present study was to investigate whether the blue-field entoptic technique may be used to quantify the increase in circulating leukocytes in the ocular microvasculature after LPS infusion. In addition, combined laser Doppler velocimetr...

Particle Tracking Velocimetry (PTV) and Particle Image Velocimetry (PIV) originally have been established for velocity field visualization. In the meantime flow fields of interest in classical and applied fluid mechanics are essentially inseparable from thermal effects in the majority of cases. Different physical phenomena are involving for temperature field mapping depending on physical proper...