Handbook of Biomedical Optics

632 Handbook of Biomedical Optics

principle up to the maximum achievable for a monochromatic

beam, given, in principle, by the beam wave vector in vacuum,

or in the traversed dielectric medium. Practically, it is limited

by the sampling capacity of the camera, which is given by the

inverse of the interpixel distance of the camera, multiplied by .

is upper bound is a basic parameter for a given camera with

around 3 microns interpixel distance, which corresponds to

wave vectors of amplitude more or less 1000 mm

−1

.

is way of using the available space bandwidth oered by the

detector or electronic camera may appear as extravagant and, at

rst sight, advice could be given against use of o-axis digital

holography. ese are the conclusions of ...