Digital Holography: Digital Hologram Recording, Numerical Reconstruction, and Related TechniquesSpringer Science & Business Media, 2005 - 164 páginas Sag’ ich zum Augenblicke verweile doch, Du bist so schön J. W. v. Goethe, „Faust“ An old dream of mankind and a sign of culture is the conservation of moments by taking an image of the world around. Pictures accompany the development of mankind. However, a picture is the two-dimensional projection of the thr- dimensional world. The perspective – recognized in Europe in the Middle Ages – was a first approach to overcome the difficulties of imaging close to reality. It took up to the twentieth century to develop a real three-dimensional imaging: - bor invented in 1948 holography. Yet still one thing was missing: the phase of the object wave could be reconstructed optically but not be measured directly. The last huge step to the complete access of the object wave was Digital Holography. By Digital Holography the intensity and the phase of electromagnetical wave fields can be measured, stored, transmitted, applied to simulations and mani- lated in the computer: An exciting new tool for the handling of light. We started our work in the field of Digital Holography in 1990. Our motivation mainly came from Holographic Interferometry, a method used with success for precise measurement of deformation and shape of opaque bodies or refractive - dex variations within transparent media. A major drawback of classical HI using photographic plates was the costly process of film development. |
Otras ediciones - Ver todo
Digital Holography: Digital Hologram Recording, Numerical Reconstruction ... Ulf Schnars,Werner Jüptner Vista previa restringida - 2005 |
Digital Holography: Digital Hologram Recording, Numerical Reconstruction ... Ulf Schnars,Werner Jüptner No hay ninguna vista previa disponible - 2010 |
Términos y frases comunes
2.4 Diffraction 2.5 Speckles A₁ aperture plane applications beam splitter becomes visible calculated CCD's Charged Coupled Devices coherence length complex amplitude Computer Generated Holography dark and bright described diffraction plane Digital Holographic Interferometry Digital Holography electrical field figure Fresnel-Kirchhoff integral function holo Huygens imaging system infinite coher interfer Interference fringes interference maximum interference pattern interference phase Light propagation Maxwell equations methods million pixels modulus monochromatic named coherence numerical reconstruction object wave objective speckle pattern optical metrology optical path difference optical path length partial waves path difference exceeds phase shift photographic plates plane waves propagation direction quantities reconstruction process reconstruction wave reference wave rough surface Schnars and Jüptner secondary spherical waves secondary waves shearography spatial coherence spatial frequency spatial vector speckle metrology speckle pattern develops spectral width subjective speckle superimposed techniques Temporal Coherence tion wave equation wave field wave train wavefront wavelength waves 2.3 Coherence ΔΙ