Phase Estimation in Optical Interferometry

192 ◾ Gannavarpu Rajshekhar, Sai Siva Gorthi, and Pramod Rastogi

focusing on the contribution from the term |R|

2

O, the complex amplitude

before deformation can be written as

Γ= ψ(,)(,)exp[ (,)]

11

xy axyjxy

(6.8)

Here, ψ(x, y) is the random phase corresponding to the scattered object

wave.

Next, we consider the hologram obtained aer deforming the object.

Proceeding with the numerical reconstruction and other steps as dis-

cussed, the complex amplitude aer deformation can be expressed as

Γ= ψ+φ(,)(,)exp[ ((,) (,))]

21

xy axyjxy xy

(6.9)

where ϕ(x, y) is the phase change in the object wave caused by deformation

and is usually referred to as the ...