3.1 The Holographic Method of Contouring of Static …
191
Fig. 3.1 Holographic scheme of an object in colliding beams (a) using two (b) and four-wavelength
generation modes of 6G-rhodamine laser with laser pump. Reprinted from [94] with permission
a result of interference between four pairs of object and reference waves. The phase
difference ϕ n between the nth object and the nth reference waves in the point is
ϕ n = 4π
z
λ n
(3.1)
where z is the distance between the hologram and the corresponding point of the
object; n is the index of the wavelength in its ascending order.
On the reconstruction stage, the reference beam is replaced by a light beam starting
from the continuous spectrum source. In this case, the reconstruction process can
formally be described in such a way that the hologram structure in point R reconstructs
N partial waves, amplitudes of which are approximately proportional to amplitudes
191
Fig. 3.1 Holographic scheme of an object in colliding beams (a) using two (b) and four-wavelength
generation modes of 6G-rhodamine laser with laser pump. Reprinted from [94] with permission
a result of interference between four pairs of object and reference waves. The phase
difference ϕ n between the nth object and the nth reference waves in the point is
ϕ n = 4π
z
λ n
(3.1)
where z is the distance between the hologram and the corresponding point of the
object; n is the index of the wavelength in its ascending order.
On the reconstruction stage, the reference beam is replaced by a light beam starting
from the continuous spectrum source. In this case, the reconstruction process can
formally be described in such a way that the hologram structure in point R reconstructs
N partial waves, amplitudes of which are approximately proportional to amplitudes