Basics of Holography - download pdf or read online

By P. Hariharan

ISBN-10: 0521002001

ISBN-13: 9780521002004

Fundamentals of Holography is a common advent to the topic written via a number one employee within the box. It starts with the speculation of holographic imaging, the features of the reconstructed photo, and a few of the kinds of holograms. useful elements of holography are then defined, together with gentle resources, the features of recording media and recording fabrics, in addition to equipment for generating sorts of holograms and computer-generated holograms. ultimately, very important functions of holography are mentioned, similar to high-resolution imaging, holographic optical components, info processing, and holographic interferometry.

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4 Beam splitters If we define the beam ratio Rϭ(r΋ o)2 as the ratio of the irradiances of the reference and object beams, we would expect the visibility of the interference fringes forming the hologram to be a maximum when Rϭ1. 5). As a result it is usually necessary to work with a value of R ϾϾ1 (typically RϷ3), to avoid nonlinear effects. A convenient way to vary the ratio of the powers in the two beams and optimize the visibility of the hologram fringes is to use a beam splitter consisting of a glass disc, which can be rotated, coated with a thin aluminum film whose reflectivity is a linear function of the azimuth.

123–70. Berlin: SpringerVerlag. Meier, R. W. (1965). Magnification and third-order aberrations in holography. Journal of the Optical Society of America, 55, 987–92. Problems 25 Rotz, F. B. & Friesem, A. A. (1966). Holograms with non-pseudoscopic real images. Applied Physics Letters, 8, 146–8. 1. A hologram is recorded using a pulsed ruby laser (␭ ϭ694 nm), and illuminated with a He–Ne laser (␭ ϭ633 nm) to view the image. The reference beam in the recording system appears to diverge from a point at a distance of 1 m from the hologram.

Longitudinal distortion in images reconstructed by reflection holograms. Optics Communications, 17, 52–4. Hariharan, P. (1978). Hologram recording geometry: its influence on image luminance. Optica Acta, 25, 527–30. Hopkins, H. H. (1950). Wave Theory of Aberrations. Oxford: The Clarendon Press. McKechnie, T. S. (1975). Speckle reduction. In Laser Speckle & Related Phenomena, Topics in Applied Physics, vol. 9, ed. J. C. Dainty, pp. 123–70. Berlin: SpringerVerlag. Meier, R. W. (1965). Magnification and third-order aberrations in holography.

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