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CT_optics
CT_optics

Intro to light
Intro to light

... Is light really a wave? Intensity (J/m2) ~ amplitude of the light electric field Energy (J) ~ frequency of the light electro-magnetic field Light oscillating electric field: ...
2011 Research Poster
2011 Research Poster

No Slide Title
No Slide Title

... A thickness D=(m+0.5) 2.02 mm would make the waves OUT of phase. For example, 1.008 mm makes them in phase, and 1.010 mm makes them OUT of phase. ...
Lecture 28 - LSU Physics
Lecture 28 - LSU Physics

... A thickness D=(m+0.5) 2.02 µm would make the waves OUT of phase. For example, 1.008 mm makes them in phase, and 1.010 mm makes them OUT of phase. ...
Wavefront shaping of infrared light through a subwavelength hole
Wavefront shaping of infrared light through a subwavelength hole

Nano-optical Imaging using Scattering Scanning Near-Field Optical Microscopy
Nano-optical Imaging using Scattering Scanning Near-Field Optical Microscopy

Diffraction-of-light
Diffraction-of-light

... bands.. The illustration above shows how light (from either the sun or the moon) is bent around small droplets in the cloud. Optical effects resulting from diffraction are produced through the interference of light waves. To visualize this, imagine light waves as water waves. If water waves contact ...
Laser beam profiling
Laser beam profiling

... Spatial characteristics describe the distribution of radiant energy across the wave front of an optical beam. The radiation can be shown as a plot of the relative intensity of points across a plane that intersects projected path of the beam. The most basic measurement of the beam’s irradiance is a s ...
A laser motor directly transforms light energy into mechanical
A laser motor directly transforms light energy into mechanical

... technique can only apply forces in the pN range. It is estimated that only about 10−10 % of the light energy is used for driving the object.3 Hence, if the efficiency of converting light into mechanical energy could be improved, a new range of applications could emerge. The light energy is actually ...
4.6 Optical Fibres
4.6 Optical Fibres

High Harmonic Generation
High Harmonic Generation

... Three step model The High harmonic generation is readily explained by three step model. Initially, the electrons are confined by the Coulomb potential of the nucleus. 1. When the intensity high enough, electrons can tunnel through the barrier into the continuum. This is called first step. 2. The la ...
Behavior Of Waves
Behavior Of Waves

... 5. Can reflect off the bottom and top surfaces of thin film, such as oil on water or bubbles, and produce a color pattern due to interference. 6. Can diffract through small slits or around lines to produce light and dark patterns or color patterns due to the interference of light waves. ...
Fourier, Fresnel and Image CGHs of three
Fourier, Fresnel and Image CGHs of three

... Figure 3: Simulated reconstruction from the hologram shown in Fig. 2(a) at the vicinity of the back focal plane of the Fourier lens for three successive transverse planes along the optical axis. In the second experiment we synthesized the two-types of the Fresnel hologram discussed in section 3B. In ...
DG Papazoglou et al.
DG Papazoglou et al.

... D.G. Papazoglou et al., Opt. Lett. 31, 1441 (2006) , D. G. Papazoglou et al., Opt. Lett., 32, 2055 (2007), D.G. Papazoglou et al., (invited) to appear in Optical Materials Express (2011) ...
Wide viewing angle holographic display with a multi spatial light
Wide viewing angle holographic display with a multi spatial light

... into entertainment such as TV, cinema or computer games and please their eyes with 3D images. The main idea of underpinning the 3D experience is that of stereoscopic vision [1]: an observer when viewing a scene sees two slightly displaced versions of that scene with the left and right eye. Next brai ...
ch.16_18 vocabulary
ch.16_18 vocabulary

... Plane mirror-flat, smooth surface that reflects light rays by regular reflection, not by diffuse reflection. Forms a virtual, erect image the same size as the object and the same distance behind the mirror as the object is in front Object-source of diverging light rays; may be luminous or illuminat ...
Laser and its applications
Laser and its applications

Introduction to Optics Frank L. Pedrotti Leno M. Pedrotti Leno S
Introduction to Optics Frank L. Pedrotti Leno M. Pedrotti Leno S

... England and Associated Companies throughout the world Visit us on the World Wide Web at: www.pearsoned.co.uk © Pearson Education Limited 2014 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mech ...
Laser beam shaping in industrial applications Wei-Yuen Tan 84717925
Laser beam shaping in industrial applications Wei-Yuen Tan 84717925

Holography: origin, basic principle and applications of a
Holography: origin, basic principle and applications of a

A simple approach to phase holography
A simple approach to phase holography

The `IEC` LASERVIEW – kit of shapes
The `IEC` LASERVIEW – kit of shapes

... Be sure it is safe to turn on the laser. Take the ‘key ring’ laser or laser pointer and aim it into the end of the bar at an angle (not down the centre of the bar. See the laser beam bouncing back and forth in a ‘zig zag’ pattern as it passes along the bar. Change the angle you are holding the laser ...
Holographic 3-D Displays - Electro-holography within
Holographic 3-D Displays - Electro-holography within

... hand, truly holographic recordings are being called displays, whereas there are in fact static holograms or dynamic holograms, which are not yet real-time capable with rewriting-times in the minute range and with large-scale setups (Tay et al., 2008). What we mean with real-time holographic displays ...
Phys405-Chapter1
Phys405-Chapter1

... Griffiths, Introduction to Electrodynamics, (Prentice-Hall, 1999) Chapter 9. Serway, Physics for Scientists and Engineers, Vol II, (Harcourt Brace, 1996) Chapter 36. ...
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Holography



Holography is the science and practice of making holograms. Typically, a hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate optics. The hologram itself is not an image and it is usually unintelligible when viewed under diffuse ambient light. It is an encoding of the light field as an interference pattern of seemingly random variations in the opacity, density, or surface profile of the photographic medium. When suitably lit, the interference pattern diffracts the light into a reproduction of the original light field and the objects that were in it appear to still be there, exhibiting visual depth cues such as parallax and perspective that change realistically with any change in the relative position of the observer.In its pure form, holography requires the use of laser light for illuminating the subject and for viewing the finished hologram. In a side-by-side comparison under optimal conditions, a holographic image is visually indistinguishable from the actual subject, if the hologram and the subject are lit just as they were at the time of recording. A microscopic level of detail throughout the recorded volume of space can be reproduced. In common practice, however, major image quality compromises are made to eliminate the need for laser illumination when viewing the hologram, and sometimes, to the extent possible, also when making it. Holographic portraiture often resorts to a non-holographic intermediate imaging procedure, to avoid the hazardous high-powered pulsed lasers otherwise needed to optically ""freeze"" living subjects as perfectly as the extremely motion-intolerant holographic recording process requires. Holograms can now also be entirely computer-generated and show objects or scenes that never existed.Holography should not be confused with lenticular and other earlier autostereoscopic 3D display technologies, which can produce superficially similar results but are based on conventional lens imaging. Stage illusions such as Pepper's Ghost and other unusual, baffling, or seemingly magical images are also often incorrectly called holograms.
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