Method based on the double sideband technique for the dynamic tracking of micrometric particles

RAMIREZ, CLAUDIO; LIZANA, ANGEL; IEMMI, CLAUDIO; CAMPOS, JUAN

Journal of Optics

IOP PUBLISHING LTD

Lugar: Londres; Año: 2016 vol. 18

2040-8978

Digital holography (DH) methods are of interest in alarge number of applications. Recently, thedouble sideband (DSB) technique was proposed, which is a DH based method that, byusingdouble filtering, provides reconstructed images without distortions and isfree of twinimages byusing an in-line configuration. In this work, we implement a method for theinvestigation of the mobility of particles based on the DSB technique. Particle holographicimages obtained usingthe DSB method are processed with digital picture recognition methods,allowing us to accurately track the spatial position of particles. The dynamic nature of themethod is achieved experimentally by using a spatial light modulator. The suitability of theproposed tracking method is validated by determining the trajectory and velocity described byglass microspheres in movement.