Coherent Optical Information Systems
... tivity is at the Bragg wavelength ⫽ 1550 nm trum reach the destination with different delays. the key innovation enabling the rapid rise of (Fig. 4). Notice that the filter has a flat top. In When a laser is used, the bandwidth of the this field. The basic fiber optics system is the other words, t ...
... tivity is at the Bragg wavelength ⫽ 1550 nm trum reach the destination with different delays. the key innovation enabling the rapid rise of (Fig. 4). Notice that the filter has a flat top. In When a laser is used, the bandwidth of the this field. The basic fiber optics system is the other words, t ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 2. Two lenses of focal lengths 8 cm and 6 cm are placed at a certain distance apart. Calculate the distance between the lenses if they form an achromatic combination. 3. Explain the formation of colours in thin film. 4. Light of wavelength 6000 Å falls normally on a thin wedge shaped film of µ=1.5, ...
... 2. Two lenses of focal lengths 8 cm and 6 cm are placed at a certain distance apart. Calculate the distance between the lenses if they form an achromatic combination. 3. Explain the formation of colours in thin film. 4. Light of wavelength 6000 Å falls normally on a thin wedge shaped film of µ=1.5, ...
A Framework for Holographic Scene Representation and Image
... future of computer graphics and interactive visual simulation. In this paper we present a framework for graphics representation, processing and display which is entirely based on digital holography and wave optics. Such holograms are elegant structures capturing the phase and amplitude of an object ...
... future of computer graphics and interactive visual simulation. In this paper we present a framework for graphics representation, processing and display which is entirely based on digital holography and wave optics. Such holograms are elegant structures capturing the phase and amplitude of an object ...
Nineteen Ways to do 3-Dimensional Imaging
... very specialized, and some could be considered on the fringes of research. Also, some techniques are known by more than one name. Then there is the argument about what is 3D imaging. Does it require that every volume element (voxel) by represented in the image. That is, the image must consist of a f ...
... very specialized, and some could be considered on the fringes of research. Also, some techniques are known by more than one name. Then there is the argument about what is 3D imaging. Does it require that every volume element (voxel) by represented in the image. That is, the image must consist of a f ...
Properties of Light and Visual Function
... to appear as the eye is scanned across the image (as opposed to focusing on a single point). Strangely, the effect seems to be reduced, but not eliminated, when the head is cocked at a 45° angle. The effect seems to exist only at intermediate distances; if the eye is moved very close to or very far ...
... to appear as the eye is scanned across the image (as opposed to focusing on a single point). Strangely, the effect seems to be reduced, but not eliminated, when the head is cocked at a 45° angle. The effect seems to exist only at intermediate distances; if the eye is moved very close to or very far ...
Resolution questions with solutions
... the diffraction pattern of one point source has its central maximum on the first minimum of the diffraction pattern of the other point source; ...
... the diffraction pattern of one point source has its central maximum on the first minimum of the diffraction pattern of the other point source; ...
n - LSU Physics
... Reflection, refraction and changes of phase: Consider a transverse pulse moving in a rope, that reaches a juncture with another rope of different density. A reflected pulse is generated. The reflected pulse is on the same side of the rope as the incident one if the speed of propagation in the rope ...
... Reflection, refraction and changes of phase: Consider a transverse pulse moving in a rope, that reaches a juncture with another rope of different density. A reflected pulse is generated. The reflected pulse is on the same side of the rope as the incident one if the speed of propagation in the rope ...
Shear-Plate Collimation Testers Ask About Our Build-to-Print and Custom Capabilities O E M
... screen and a collimation reference line. To collimate an expanded laser beam, the tester is inserted in the beam and the collimator is adjusted until the fringes observed on the screen are parallel to the reference line. All CVI Melles Griot shear-plate modules follow the same sign convention: a con ...
... screen and a collimation reference line. To collimate an expanded laser beam, the tester is inserted in the beam and the collimator is adjusted until the fringes observed on the screen are parallel to the reference line. All CVI Melles Griot shear-plate modules follow the same sign convention: a con ...
Volume Holographic Recording and Readout for 90
... In Sec. 3, governing equations are derived for the selfreadout of a dynamic hologram under 1. intensitydependent refractive index modulation 共as is true for a Kerr-type material or a photorefractive material with strong photovoltaic effect兲; and 2. intensity gradient-dependent refractive index modul ...
... In Sec. 3, governing equations are derived for the selfreadout of a dynamic hologram under 1. intensitydependent refractive index modulation 共as is true for a Kerr-type material or a photorefractive material with strong photovoltaic effect兲; and 2. intensity gradient-dependent refractive index modul ...
Advantages of Holographic Optical Tweezers
... and rotation angle of its hologram – is added by complex addition to the other traps’ holograms to constitute a single hologram by taking the phase of the complex result. To move one trap its holographic information is changed and added again to the hologram of the other traps. In principle a very l ...
... and rotation angle of its hologram – is added by complex addition to the other traps’ holograms to constitute a single hologram by taking the phase of the complex result. To move one trap its holographic information is changed and added again to the hologram of the other traps. In principle a very l ...
Chapter 37 Wave Optics (I)
... Calculate the spacing between the bright fringes of yellow light of wavelength 600 nm. The slit separation is 0.8 mm, and the screen is 2 m from the slits. ...
... Calculate the spacing between the bright fringes of yellow light of wavelength 600 nm. The slit separation is 0.8 mm, and the screen is 2 m from the slits. ...
new challenges in thermo-fluiddynamic research by advanced
... spray will be well focused and by moving the camera forwards or backwards, the image can be evaluated plane by plane. The decision about the sharpness of a contour is made by a digital image processing system described in detail by [6], [20]. An example of the result of such an computeraided image p ...
... spray will be well focused and by moving the camera forwards or backwards, the image can be evaluated plane by plane. The decision about the sharpness of a contour is made by a digital image processing system described in detail by [6], [20]. An example of the result of such an computeraided image p ...
Diffraction
... masses from all other disturbances, such as seismic vibrations of the earth and gas molecules in the air. The measurement is performed by bouncing high-power laser light beams back and forth between the test masses in each arm, and then interfering the two arms' beams with each other. The slight cha ...
... masses from all other disturbances, such as seismic vibrations of the earth and gas molecules in the air. The measurement is performed by bouncing high-power laser light beams back and forth between the test masses in each arm, and then interfering the two arms' beams with each other. The slight cha ...
PHE-09 (2007
... iii) A beam of parallel light of wavelength 6000 Å is incident normally on a 1 rupee coin of diameter 3 cm. If an observation screen is placed at a distance of 1 m from the coin, how many Fresnel zones would be obstructed by it (the coin)? For what separation between the coin and the screen, only 5 ...
... iii) A beam of parallel light of wavelength 6000 Å is incident normally on a 1 rupee coin of diameter 3 cm. If an observation screen is placed at a distance of 1 m from the coin, how many Fresnel zones would be obstructed by it (the coin)? For what separation between the coin and the screen, only 5 ...
Physics Final Review Packet
... Ella Fitzgerald has the ability to break glass when she sings. Why does the glass shatter? resonance ...
... Ella Fitzgerald has the ability to break glass when she sings. Why does the glass shatter? resonance ...
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.