Digital in-line holography for microscopic applications

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Digital in-line holography for microscopic applications

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dc.contributor.author Singh, Vijay Raj
dc.contributor.author Asundi, Anand Krishna
dc.date.accessioned 2011-10-10T06:11:09Z
dc.date.available 2011-10-10T06:11:09Z
dc.date.copyright 2005
dc.date.issued 2011-10-10
dc.identifier.citation Singh, V. R., & Asundi, A. K. (2005). Digital in-line holography for microscopic applications. Paper presented at the International Congress of Experimental Mechanics.
dc.identifier.uri http://hdl.handle.net/10220/7192
dc.description.abstract Lensless digital holographic microscope (DHM) is presented for the study of transparent micro objects in three dimensions. A highly diverging beam replaces the conventional microscope objectives to provide the desired magnification. Direct evaluation of the phase information from single hologram makes digital holography a most attractive tool in optical metrology. We successfully implement DHM for the applications of “microholes inspection” and “microfluid analysis”. The amplitude and phase contrast images of microholes are numerically reconstructed and ompared with the conventional optical microscopic images. The direct evaluation of phase information gives the 3-D profile of microholes. Furthermore, the change in the refractive index of microfluid occurred by Brownian motion of particles inside a microchannel is studied. Two digital holograms are recorded corresponding to different states of particles motion, the subtracted phase gives the change in optical path length.
dc.format.extent 7 p.
dc.language.iso en
dc.rights © 2005 International Congress of Experimental Mechanics.
dc.subject DRNTU::Science::Physics::Optics and light
dc.title Digital in-line holography for microscopic applications
dc.type Conference Paper
dc.contributor.conference International Congress of experimental Mechanics (8th : 2005 : New Delhi)
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.description.version Accepted version
dc.identifier.rims 143376

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