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CS - Classes
CS - Classes

...  Overview of lasers: history, current and future markets, stimulated emission, modes – transverse and longitudinal, gain profile  Physics of laser gain, gain equation  Gaussian beam propagation and optical cavities  Transient effects – gain saturation, rate equations, Q-switching, mode-locking  ...
Download PDF
Download PDF

DVD Optical System Design
DVD Optical System Design

... onto the disc, I have to figure out a way to divert it so it doesn’t feedback into the laser. • The design must include—or at least accommodate—a tracking system. • Unlike smaller design problems, this project will take cost and availability of components into account (This, however, probably won’t ...
J. Spigulis. Side-emitting optical fibers brighten our world in new
J. Spigulis. Side-emitting optical fibers brighten our world in new

... illuminated logo pictured on p. 39 from the annual Photonics West symposium in San Jose, Calif. In this case, copper vapor laser input was used. Silica-core glowing fibers have also been used to create scenic effects for musical or theatrical performances, such as those seen above and to the right, wh ...
PolarView™ ND filter
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... increasing the risk of over exposure in bright ambient light. To ensure optimal image exposure over a wide range of lighting conditions, the well-equipped photographer often carries a number of ND filters, each with a specific fixed optical density. Changing the filters can be cumbersome and there i ...
Rays and Optical beams
Rays and Optical beams

... In geometrical optics, the propagation of optical waves can be described approximately by using the concept of rays. This is valid provided the beam diameter is much larger than the wavelength and the diffraction can be neglected. The rays travel in straight lines in homogeneous media and obey Ferma ...
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... where f is the volume fraction of nonlinear material and L is the local-field factor, which is different for each material geometry. - Under appropriate conditions, the product f L2 L 2 can exceed unity. - For a homogeneous material ...
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... Nearsighted eye cannot focus on objects far away  (further than the far point < infinity)  The lens retina distance is too long and/or the lens  is too converging.  ...
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... • An object placed beyond a convergent lenses’ focal point, will produce a real, inverted image on the other side of the lens. This is the principle used in slide projectors. • An object placed between a convergent lens and its focal point will produce a virtual image on the same side as the object. ...
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Was there a measurable power received when

... A microwave lens is a device for collecting and focusing divergent radiation into a parallel beam by refraction (bending) in much the same way that an optical lens focuses a light beam. Microwave lenses may take a variety of shapes, including disks, cylinders, and spheres. Lenses are often manufactu ...
Lesson-2 Light Microscopy
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... Microscopes are instruments designed to produce magnified visual or photographic images of objects too small to be seen with the naked eye. The microscope must accomplish three tasks: produce a magnified image of the specimen, separate the details in the image, and render the details visible to the ...
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... idea was to consider every single point on the wavefront of the wave as itself a source of waves. • In other words a point on the wavefront would emit a spherical wavelet or secondary wave,of same velocity and wavelength as the original wave. ...
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... interference results in high intensity on the photodetector, destructive interference in low intensity. Since the light reflecting from the object double passes the distance to the object, a displacement that matches an optical path length of half the laser wavelength leads to a full wave of change ...
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Emerging Trends in Contact Lens Technology Jason Jedlicka, OD

... Better materials Should they be in Si Hy only? Better designs Many new designs and more coming What is the difference in all these designs? KC specific vs. Irregular cornea generically Possible higher order aberration technology Trends in Soft Lenses for Presbyopia PV2 MF Better Optics ...
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... The rays (directions of propagation) are straight lines perpendicular to the wave fronts The above assumption is valid only when the size of the barrier (or the size of the media) is much larger than the wavelength of light ...
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... Let summarize it all. The refractive index of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. For example, typical glass has a refractive index of 1.5, which means that light travels at 0.67 times the speed in air or vacuum. Tw ...
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... State changed though phase shifts or by switching in space. Linear optical elements can be used without major problems (determinsitic), but loss and noise will destroy the system ...
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Lens Types

... from the object to the lens, z2 is the length from the lens to the focal point, and f is the focal length the equation to find the magnification is , M=-(z2/z1) You would place a sensor at the focal point to get a focused image Convex have a + focal length (image is on the other side of light) Conca ...
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Nonimaging optics

Nonimaging optics (also called anidolic optics) is the branch of optics concerned with the optimal transfer of light radiation between a source and a target. Unlike traditional imaging optics, the techniques involved do not attempt to form an image of the source; instead an optimized optical system for optical radiative transfer from a source to a target is desired.
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