Acousto-Optic Devices - Panasonic Industrial Devices
... A piezoelectric element is bonded to an acousto-optic medium consisting of single crystal such as tellurium dioxide (TeO2) and lead molybdate (PbMoO4) or glass, and when an electrical signal is applied to this piezoelectric element to generate acoustic waves, which are propagated in the medium, a la ...
... A piezoelectric element is bonded to an acousto-optic medium consisting of single crystal such as tellurium dioxide (TeO2) and lead molybdate (PbMoO4) or glass, and when an electrical signal is applied to this piezoelectric element to generate acoustic waves, which are propagated in the medium, a la ...
Chapter 24
... When charges vibrate, they act like tiny antennas. The electric field will oscillate in the direction of the vibration. Because vibration can occur in all directions, the resultant e-m wave is a superposition of the waves produced by the vibrating charges. This results in unpolarized light. If the ...
... When charges vibrate, they act like tiny antennas. The electric field will oscillate in the direction of the vibration. Because vibration can occur in all directions, the resultant e-m wave is a superposition of the waves produced by the vibrating charges. This results in unpolarized light. If the ...
Laser Refraction and Diffraction
... optics based on “waves” must be introduced for further analyses. One crucial principle that forms the foundation of wave optics is the Huygens-Fresnel principle proposed by Christiaan Huygens and Augustin-Jean Fresnel. This principle holds that a wavefront is composed of numerous small wave sources. ...
... optics based on “waves” must be introduced for further analyses. One crucial principle that forms the foundation of wave optics is the Huygens-Fresnel principle proposed by Christiaan Huygens and Augustin-Jean Fresnel. This principle holds that a wavefront is composed of numerous small wave sources. ...
Laser Vibrometer Measurements of Objects Immersed
... Vibrometry on submerged objects is fundamentally not different from vibrometry in air. In air, the object must be visible; in a fluid, the probing laser must also "see" the object and return enough light from the object to make an accurate measurement. In air, the index of refraction is close to one ...
... Vibrometry on submerged objects is fundamentally not different from vibrometry in air. In air, the object must be visible; in a fluid, the probing laser must also "see" the object and return enough light from the object to make an accurate measurement. In air, the index of refraction is close to one ...
A1979HZ30700001
... few days while preparing for an internal company review of research on optical communication. This was prior to the establishment of feasibility of lowloss lightwave propagation on glass fibers Work at Bell Laboratories had created a rather refined technique of guiding a number of laser beams along ...
... few days while preparing for an internal company review of research on optical communication. This was prior to the establishment of feasibility of lowloss lightwave propagation on glass fibers Work at Bell Laboratories had created a rather refined technique of guiding a number of laser beams along ...
BLUE PRINT FOR QUESTION PAPER APPLIED PHYSICS – II (R
... interference due to reflected and transmitted light by thin transparent parallel film, origin of colours in thin film, Wedge shaped thin film, Newton’s rings Applications of interference- Determination of thickness of very thin wire or foil, determination of refractive index of liquid, wavelength of ...
... interference due to reflected and transmitted light by thin transparent parallel film, origin of colours in thin film, Wedge shaped thin film, Newton’s rings Applications of interference- Determination of thickness of very thin wire or foil, determination of refractive index of liquid, wavelength of ...
Optical Reconstruction of Holographic Images
... away from the hologram. Equivalently, we can simulate the propagation of a wave field equal to H digitally. Of course, R is never exactly a uniform plane wave, so distortion and noise are thereby introduced. The other terms in (1) that are not proportional to the object wave also introduce noise int ...
... away from the hologram. Equivalently, we can simulate the propagation of a wave field equal to H digitally. Of course, R is never exactly a uniform plane wave, so distortion and noise are thereby introduced. The other terms in (1) that are not proportional to the object wave also introduce noise int ...
Chapter 24 Wave Optics Diffraction Grating Interference by Thin
... incident ray • Ray 2, which is reflected from the lower surface, undergoes no phase change with respect to the incident wave ...
... incident ray • Ray 2, which is reflected from the lower surface, undergoes no phase change with respect to the incident wave ...
FINCH: Fresnel Incoherent Correlation Hologram
... (Li et al., 2001; Sando et al., 2003; Shaked & Rosen, 2008; Park et al., 2009). This method, although it shows promising prospects, is relatively slow since it is based on capturing tens of scene images from different view angles. Another method is called scanning holography (Poon & Korpel, 1979; Sc ...
... (Li et al., 2001; Sando et al., 2003; Shaked & Rosen, 2008; Park et al., 2009). This method, although it shows promising prospects, is relatively slow since it is based on capturing tens of scene images from different view angles. Another method is called scanning holography (Poon & Korpel, 1979; Sc ...
Part 1
... The sign between kx and t determines the direction the wave travels along the x-axis. + wave travels to left (in the direction of decreasing x) - wave travels to right (in the direction of increasing x) The phase angle shifts the cosine or sine function left or right. This can be used to match ...
... The sign between kx and t determines the direction the wave travels along the x-axis. + wave travels to left (in the direction of decreasing x) - wave travels to right (in the direction of increasing x) The phase angle shifts the cosine or sine function left or right. This can be used to match ...
The Michelson Interferometer and Its Applications
... proven, along with similar other tools and instruments leveraging interference phenomena, to have wide utility. It allows for extremely precise determination of distances, characterization of spectral bandwidth, the ...
... proven, along with similar other tools and instruments leveraging interference phenomena, to have wide utility. It allows for extremely precise determination of distances, characterization of spectral bandwidth, the ...
PPT - Tensors for Tots
... separating white light into components of different wavelength (different colors). The different colors refract at different angles, splitting white light into a rainbow. When light passes through a prism, it is refracted twice, when it enters the prism and when it leaves. Refraction is the change i ...
... separating white light into components of different wavelength (different colors). The different colors refract at different angles, splitting white light into a rainbow. When light passes through a prism, it is refracted twice, when it enters the prism and when it leaves. Refraction is the change i ...
Interference
... Some colours work - some don’t... • The optical path difference is just the extra distance that one ray travels wrt to an adjacent one. It’s easy to see that this leads to: ...
... Some colours work - some don’t... • The optical path difference is just the extra distance that one ray travels wrt to an adjacent one. It’s easy to see that this leads to: ...
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.