Fraunhofer Diffraction
... 2. Place the laser at the end of the optical rail. Write down its wavelength. Align the laser beam parallel to the rail. Set the mesh with the largest available period onto the optical rail immediately behind the laser. Place the screen onto the rail, 15-20 cm away from its other end. Place L1 (it ...
... 2. Place the laser at the end of the optical rail. Write down its wavelength. Align the laser beam parallel to the rail. Set the mesh with the largest available period onto the optical rail immediately behind the laser. Place the screen onto the rail, 15-20 cm away from its other end. Place L1 (it ...
Physical Optics: Diffraction, Interference, and Polarization of Light
... When light passes through an opening or simply goes by the edge of any obstacle, the wave bends into the region not directly exposed to the wavefront. This phenomena is called diffraction. When the size of the opening or object is large compared to the wavelength of the light, the spreading effect i ...
... When light passes through an opening or simply goes by the edge of any obstacle, the wave bends into the region not directly exposed to the wavefront. This phenomena is called diffraction. When the size of the opening or object is large compared to the wavelength of the light, the spreading effect i ...
All Solid State Laser Source for Tunable Blue and Ultraviolet Radiation.
... long! is cut for Brewsters angle and fixed on a tiltable mount. The two curved mirrors have a radius of 50 mm, the geometrical length of the optical path between the two mirrors is 66.5 mm, and the length of the collimated branch of the resonator via the two plane mirrors is 300 mm. This resonator g ...
... long! is cut for Brewsters angle and fixed on a tiltable mount. The two curved mirrors have a radius of 50 mm, the geometrical length of the optical path between the two mirrors is 66.5 mm, and the length of the collimated branch of the resonator via the two plane mirrors is 300 mm. This resonator g ...
... molecule occurred with equal abundance, then there would be no net effect on the polarization of light passing through. However, naturally occurring biological molecules of a given species are always either purely right-handed or purely left-handed. Probably at the time of origin of life, organic mo ...
lecture 3 Introduction to Laser
... Mode-locking is a technique in by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12s) or femtoseconds (10−15s). Need for Mode Locking When laser is oscillating with various modes and if modes are uncorrelated The output intensity i.e ...
... Mode-locking is a technique in by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12s) or femtoseconds (10−15s). Need for Mode Locking When laser is oscillating with various modes and if modes are uncorrelated The output intensity i.e ...
Stellar Activity with SONG
... Half wave plate retards one polarisation by a half wavelength, or 180 degrees. This type of wave plate rotates the polarization direction of linear polarized light. ...
... Half wave plate retards one polarisation by a half wavelength, or 180 degrees. This type of wave plate rotates the polarization direction of linear polarized light. ...
297.4 kB
... The past ten years have seen much interest in the application of deformation/strain measurement techniques for the inspection and monitoring of works of art, covering point-strain measurements using resistance-strain gauges and fibre-optic sensors, as well as full-field optical measurement approache ...
... The past ten years have seen much interest in the application of deformation/strain measurement techniques for the inspection and monitoring of works of art, covering point-strain measurements using resistance-strain gauges and fibre-optic sensors, as well as full-field optical measurement approache ...
PowerPoint 簡報
... (a) Huygens-Fresnel principles states that each point in the aperture becomes a source of secondary waves (spherical waves). The spherical wavefronts are separated by . The new wavefront is the envelope of the all these spherical wavefronts. (b) Another possible wavefront occurs at an angle q to th ...
... (a) Huygens-Fresnel principles states that each point in the aperture becomes a source of secondary waves (spherical waves). The spherical wavefronts are separated by . The new wavefront is the envelope of the all these spherical wavefronts. (b) Another possible wavefront occurs at an angle q to th ...
The diffraction of light by sound waves of high
... figure l(b), that the amplitude of the corrugation of the emerging wave-front is less than that in the case of figure l(a). Figure l(c) illustrates a case when the maximum optical length is just equal to the minimum optical length. This occurs when the direction of the incident beam is inclined to t ...
... figure l(b), that the amplitude of the corrugation of the emerging wave-front is less than that in the case of figure l(a). Figure l(c) illustrates a case when the maximum optical length is just equal to the minimum optical length. This occurs when the direction of the incident beam is inclined to t ...
Laser - bYTEBoss
... Uses of laser - Medical Lasers Used as a scalpel Used to reattach retinas Used in conjunction with fiber optics to place the laser beam where it needs to be Used to stitch up incisions after surgery, by fusing together skin ...
... Uses of laser - Medical Lasers Used as a scalpel Used to reattach retinas Used in conjunction with fiber optics to place the laser beam where it needs to be Used to stitch up incisions after surgery, by fusing together skin ...
PART 3_ir spectra_01
... An interferogram is generated because of the unique optics of an FT-IR instrument. The key components are a moveable mirror and beam splitter. The moveable mirror is responsible for the quality of the interferogram, and it is very important to move the mirror at constant speed. For this reason, the ...
... An interferogram is generated because of the unique optics of an FT-IR instrument. The key components are a moveable mirror and beam splitter. The moveable mirror is responsible for the quality of the interferogram, and it is very important to move the mirror at constant speed. For this reason, the ...
IO.5 Elliptically Polarized Light - FSU
... For crystals cut as indicated, the two beams will follow the same path inside the crystal, but one will travel with greater speed than the other, hence, when they emerge from the crystal, one will be ahead of the other in phase, and the motion of the end of the resultant electric vector will be elli ...
... For crystals cut as indicated, the two beams will follow the same path inside the crystal, but one will travel with greater speed than the other, hence, when they emerge from the crystal, one will be ahead of the other in phase, and the motion of the end of the resultant electric vector will be elli ...
8. Beam splitters
... 8.1. Beam splitter plates Plate dividers are thin plane-parallel or edge plates made of optical glass, quartz or single-axis crystals (e.g. CaF2) coated with thin-film layers system. Depending on application it can be either metallic layer or dielectric coating. However one should remember that suc ...
... 8.1. Beam splitter plates Plate dividers are thin plane-parallel or edge plates made of optical glass, quartz or single-axis crystals (e.g. CaF2) coated with thin-film layers system. Depending on application it can be either metallic layer or dielectric coating. However one should remember that suc ...
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.