Holography: A Practical Approach by Gerhard K. Ackermann, Jürgen Eichler

By Gerhard K. Ackermann, Jürgen Eichler

From basics to complex experiments and functions, this booklet explains how holography works. It courses scholars from basic optics to complex themes in holography, following a pragmatic technique utilizing real-world fabrics. This confirmed college textbook includes routines plus ideas in addition to directions for greater than 20 experiments.

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The three-dimensional impression in the vertical direction is lost. Usually this will not be noticed by the observer: the reason for that is the eyes being oriented horizontally. A photosensitive layer is positioned inside the real image and the H2 hologram is created according to Fig. 4b. By this process the information of both the pseudoscopic image and of the slit aperture is recorded. To reconstruct the images of rainbow holograms they are rotated by 180◦ to create an orthoscopic image from the pseudoscopic one.

24) for a constant reconstruction wave of amplitude 1: U(ξ, η ) = t0 + βTI (ξ, η ). 4) 47 48 Problems The Fourier transform of Eq. 4) in the back focal plane of the lens is u( x, y) = F{U(ξ, η )} u( x, y) = (t0 + βτ ) · δ( x, y) + βτ · o( x, y)(•)o( x, y) + βτ · o( x − b, y) + βτ · o∗ (− x + b, −y). 5) The reconstruction of the wave results in four terms similar to Eq. 24): in a point source (zeroth order) surrounded by a halo (second summand of Eq. 5), the autocorrelation function, see Appendix C) and two symmetrically positioned real images.

If o( x, y) has the angle of incidence δ0 (see Fig. 5), Eqs. 26) can be written as u−1 = βτr2 oei 2π λ x (sin(− δ0 )+2 sin δ ) . 27) Here the relation e a eb = e a+b was used. 27) represents a wave with the angle of incidence δ−1 with sin δ−1 = sin(−δ0 ) + 2 sin δ. 28) As already stated the conjugated image with δ0 = 0◦ (object wave impinging perpendicular on the hologram) appears at an angle of sin δ−1 = 2 sin δ; δ is the angle of the reference and reconstruction wave. 3 Reversal of the Reconstruction Wave In two-stage holography also the real conjugated pseudoscopic image is used, Fig.

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