Erythrocytes volume and refractive index measurement with a digital holographic microscope

Digital holographic microscopy (DHM) is a technique that allows obtaining, from a single recorded hologram, quantitative phase image of living cell with interferometric accuracy. Specifically the optical phase shift induced by the specimen on the transmitted wave front can be regarded as a powerful endogenous contrast agent, depending on both the thickness and the refractive index of the sample. We have recently proposed a new and efficient decoupling procedure allowing to directly obtain separate measurements of the thickness and the integral refractive index of a given living cell. Consequently, it has been possible to accurately measure (with a precision of 0.0003) the mean refractive index and the volume of living erythrocytes. Here, application of this decoupling procedure on erythrocyte allows to measure a refractive index of 1.40 and a mean volume of about 106 ?m3.


Published in:
Optical Diagnostics and Sensing VII, 6445
Presented at:
Photonics West, San Jose, CA, January 20-25, 2007
Year:
2007
Publisher:
SPIE
ISSN:
1605-7422
ISBN:
0819465585
Keywords:
Laboratories:




 Record created 2009-07-20, last modified 2018-03-17

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