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Topic: Beam splitter

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	Beam splitter - Wikipedia, the free encyclopedia
		A beam splitter is an optical device, that splits a beam of light in two.
		Polarizing beam splitters, such as the Wollaston prism, use birefringent materials, splitting light into beams of differing polarization.
		A third version of the beam splitter is a dichroic mirrored prism assembly which uses dichroic optical coatings to split the incoming light into three beams, one each of red, green and blue.
	en.wikipedia.org /wiki/Beam_splitter (257 words)

	United States Patent Application: 0010036083
		The dichroic beam splitter combines light from the first and second solid state light sources by passing light in the first band while reflecting light in the second band to generate light having a spectral content in the first and second bands.
		Beam splitter 54 combines the output of arrays 51 and 52 which emit light in spectral bands at cl and c2, respectively.
		Beam splitter 54 is chosen such that it reflects light around the spectral maximum of array 52 and transmits light of all other visible wavelengths.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/PTO/search-adv.html&r=1&f=G&l=50&d=PG01&p=1&S1=20010036083.PGNR.&OS=DN/20010036083&RS=DN/20010036083 (2078 words)

	The Optics Project - Modules - Interference - Theory - Michelson Interferometer (Site not responding. Last check: 2007-08-19)
		The beam of interest is the one that transmits through the beam splitter and travels to the observation screen.
		It is the transmitted beam created when the light from the point source was incident upon the beam splitter.
		We are interested in the reflected beam, which travels to the observation screen and interferes there with the beam that has traveled in the other arm of the interferometer.
	webtop.msstate.edu /top/mod_int_the_mic.html (406 words)

	FGS Interferometer
		The dielectric layer performs an equal intensity division of the beam, reflecting half and transmitting half, imparting a 90 degree phase lag in the transmitted beam.
		The degree of interference between the two beams is directly related to the angle, or tilt, between the incoming wavefront's propagation vector and the plane of the dielectric surface.
		Each beam is focussed by a positive doublet onto a field stop assembly (which narrows the IFOV to 5 x 5 arcsec).
	www.stsci.edu:8082 /hst/fgs/design/interferometer/index_html?printable=1 (732 words)

	Beam splitter -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-08-19)
		Instead of a silver coating, a (A material such as glass or porcelain with negligible electrical or thermal conductivity) dielectric (Click link for more info and facts about optical coating) optical coating may be used instead.
		A third version of the beam splitter is a (Click link for more info and facts about dichroic) dichroic mirrored prism assembly that splits the incoming light into three beams, one each of red, green and blue.
		Such a device was used in multi-tube colour television cameras and also in the 3 film (A trademarked method of making color motion pictures) Technicolor movie cameras.
	www.absoluteastronomy.com /encyclopedia/b/be/beam_splitter.htm (219 words)

	A Simple INTERFEROMETER for testing telescope mirrors
		If we input a narrow cone of rays, focused after reflection from the beam splitter onto point C in figure 2, then the above argument holds for each ray of the cone, and point C becomes a reference point against which the mirror under test may be compared.
		The rays reflected from the beam splitter to point C are now a 'reference beam', whilst the rays first reflected from the oblique mirror diverge and become a 'test beam'.
		The oblique and beam splitter are at 45° to the axis of the test piece, and reflection of the test beam is from the front of the beam splitter.
	www.smart-technology.supanet.com (917 words)

	Splitter -> Pirex
		The dominating problem of this beam line is the activation generated by the relatively high splitter (EHT) losses.
		When cutting off 20 µA from the 1.5 mA main beam as much as 2 µA of the protons are making head on collisions with the septum (wires or strips) as has been established through measurements by M. Olivo (please contact him if you need more information about splitter details).
		The proton losses along the beam line produced by spill of the splitter were computed with the computer code Turtle which is available electronically for various PC operating systems.
	people.web.psi.ch /rohrer_u/pirex.htm (382 words)

	Switch channels atom beams TRN 013101
		A group of European researchers has built a tiny beam splitter for guiding atoms that is essentially a forked wire that lures a batch of atoms along either fork or coaxes half to go one way and half the other.
		The beam splitter is a step toward controlling small batches of atoms at a scale that could be useful for studying their quantum behavior.
		The beam splitter is made up of the 10-micron wires that guide the atoms, a pair of U-shaped 200-micron wires that are used to load atoms into the smaller wire, and a 1-millimeter-thick U-shaped wire underneath the chip that feeds atoms to the 200-micron wires.
	www.trnmag.com /Stories/013101/Switch_channels_atom_beams_013101.html (977 words)

	A dissipative quantum mechanical beam-splitter
		We show the existence of quantum interferences due to phase correlations between the input beams and it is shown that these correlations can result in loss quenching.
		Campos, B. Saleh and M. Teich, "Quantumum mechanical lossless beam splitter: SU(2) symmetry and photon statistics", Phys.
		Huttner and Y. Ben-Aryeh, "In uence of a beam splitter on photon statistics", Phys.
	www.opticsexpress.org /abstract.cfm?URI=OPEX-2-2-29 (554 words)

	Excel Beam Splitting & Bend Optics
		Beam Splitters are used to separate the laser beam into intensity ratios of 33/67% or 50/50% without disturbing the polarization of the laser beam for multiaxis applications.
		A Beam Bender is used to steer the laser beam in a perpendicular direction.
		In the 1014A 50/50 Beam Splitter, the laser beam is divided into two beams of equal intensities, one in the same direction as the original propagation direction, and the other perpendicular.
	www.excelprecision.com /splitter.html (158 words)

	Interferometer
		This can be accomplished by expensive extremely high quality optics for large-diameter laser beams or, as we do, by keeping the laser beam small inside the interferometer and only expanding the beam for viewing after the interference occurs at the beam splitter.
		Take the mounted beam splitter and place it in between the laser pointer and the adjustable mirror mount.
		The double stick tape will hold the beam splitter in place while you measure the distance between the adjustable mirror and the laser spot on the beam splitter.
	www.ligo-wa.caltech.edu /teachers_corner/lessons/IFO_9t12.html (2369 words)

	Citebase - Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
		Citebase - Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
		Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
		We conjecture that this is a general property of the beam splitter: Nonclassicality of the inputs is a necessary condition for entangling fields in the beam splitter.
	citebase.eprints.org /cgi-bin/citations?archiveID=oai:arXiv.org:quant-ph/0106136 (1198 words)

	HOLOPHILE, INC., About Holography, hologram, holograms, holography, holograph, holography exhibitions, holographic ...
		The second (object) beam is directed at the subject of the composition and similarly expanded to illuminate it.
		Some of this reflected object beam then meets the reference beam at the holographic film, producing an interference pattern which is recorded in the light sensitive emulsion.
		Holographers use lenses to widen the lasers beam to illuminate all of the subject which is to be holographed.
	www.holophile.com /about.htm (2061 words)

	CBS Advice
		A cube beam splitter was used to split the beam.
		Between the sample and the beam splitter is a quarter-wave plate.
		The peaks might be the same peak reflected off the faces of the beam splitter and since the beam splitter is tilted the different reflections are separated.
	laser.physics.sunysb.edu /~dbennett/optics4/advice.htm (1336 words)

	Telospace: The Square Root of NOT (Site not responding. Last check: 2007-08-19)
		The beam of light begins at the emitter (upper left) and is directed downward at 45º to the right.
		Half of the photons in the beam are reflected to the U-detector while the other half are transmitted (pass through) to the D-detector.
		Because beam splitters create an even chance a photon will reflect or transmit, we assume each path is equally probable (25%).
	home.pacbell.net /claydale/squarenot.htm (1303 words)

	FGS IHB for Cycle 14
		The beam is collimated and compressed (by a factor of ~60) by an
		The asphere contributes astigmatism, spherical aberration and coma to the incident beam.
		After the SSA assembly, the beam passes through a field stop (not shown) to minimize scattered light and narrow the field of view.
	www.stsci.edu:8083 /hst/fgs/documents/instrumenthandbook/c02_instdesign2.html?printable=1 (836 words)

	Flip Mirrors and Beam Splitters for CCD - Find, Center and Focus FAST! (Site not responding. Last check: 2007-08-19)
		The Beam Splitter is useful where light is plentiful and where tracking and imaging must be done simultaneously.
		The Beam Splitter directs a fraction of the total light into the eyepiece and simultaneously passes the remainder straight through to the CCD chip.
		The ratio of light directed to the eyepiece and light passed to the CCD is fixed for each Beam Splitter unit, but can be specified at the time of manufacture in ratios of 30-70, 40-60 or 50-50, with the largest portion being passed to the CCD camera.
	www.murni.com /fm_0.htm (911 words)

	Laser Beam \| Laser Beam Splitter (Site not responding. Last check: 2007-08-19)
		Laser beams are visible or invisible in the infra red region.
		The basis of the hazard classification scheme is the ability of the laser beam or reflected beam to cause damage to your eyes or skin during the lasers operation.
		The MPE applies to both the laser beam and the reflection of the beam, which is important to consider if working with reflective materials such as metals.
	www.etfadvisors.com /lasers_what_why.cfm (1785 words)

	SORL - Product Lines
		In this type of instrument, light coming from the laser source is spatially filtered, collimated and passed through a beam splitter.
		Half of the light is reflected by the beam splitter and directed to a reference flat.
		At the beam splitter, the two beams of light recombine.
	www.sorl.com /productline/lupi/lupidesc.htm (269 words)

	Method and apparatus for reading or measuring magneto-optical storage media using pinhole aperture (US4847823)
		The system includes a laser for producing a linearly polarized beam and a beam splitter for directing the transmitted beam to the disk and for deflecting a portion of the reflected return beam from the disk to a photodetector.
		a beam splitter positioned in the path of said light beam to pass at least a portion of the light beam to the medium and with the reflected beam from the medium being at least partially deflected by the beam splitter;
		an analyzer for receiving the deflected beam from the beam splitter with its polarization direction being selected so as to discriminate between the differing polarization plane angles through which the reflected beam can be rotated relative to the transmitted beam by the medium; and
	www.delphion.com /details?pn10=US04847823 (319 words)

	Beam Splitters (Site not responding. Last check: 2007-08-19)
		We mounted the camera on a piece of plywood with a hole in front of the lens with the beam splitter looking both forward and down at the same time.
		A video camera looking down from the top of the beam splitter gave a composite shot of what the camera saw.
		If exact alignment of the video assist camera is needed, a beam splitter like this could be used.
	www.rondexter.com /stop_motion_animation/stop_motion_animation/beam_splitters.htm (244 words)

	GEOPHYSICS
		The two moments of rotation equilibrate the beam and thus (using the angle of torsion and moment of torsion of the wire) the moment of rotation of gravity can be determined.
		The components perpendicular to the axis adjust the beam parallel and proportional to the gradient of gravity.
		When the galvanometer rotates, unequal intensities of light fall on each half of the beam splitter and the phototubes register unequal quantities of light, and the voltage at the junction between the phototubes varies accordingly.
	www.physics.uq.edu.au /physics_museum/tour/geophysics.html (3446 words)

	Interferometer
		We used a 12.5x17.5 mm 50:50 beam splitter.
		(Beam splitters are sometimes called "two-way" mirrors.) The term 50:50 means that 50% of incident light is reflected and 50% is transmitted by the beam-splitter coating.
		There are a variety of other experiments to do with the instrument, such as placing a sample of very hot water near one of the beam paths, halfway between the beam splitter and the end mirror.
	apex.ligo-wa.caltech.edu /teachers_corner/lessons/IFO_9t12.html (2369 words)

	(WO 01/09677) IMAGE PROJECTION SYSTEM WITH A POLARIZING BEAM SPLITTER (Site not responding. Last check: 2007-08-19)
		A light source (20) produces a light beam directed at the beam splitter (14) which reflects one polarization and transmits the other.
		The beam splitter again reflects one polarization and transmits the other so that the encoded image is either reflected or transmitted to a screen (25).
		The wire grid polarizing beam splitter is capable of being oriented at various angles with respect to the source light beam and modulated beam, and accepts relatively divergent light.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/09677.010208 (271 words)

	BEAM SPLITTER, Laser, Polarizing, Beamsplitter Cube, Beamsplitter Plate, Polarization Beamsplitter Cube
		The performance of beam splitter depends on the coating specifications.
		The polarization beamsplitter cube can separate a laser beam into two different polarization beam, which can be used as polarizer, beamsplitter or polarization beam combiner.
		The output beam, which is parallel to input beam is called the p-polarized beam, while the orthogonal output beam is defined as the s-polarized beam.
	www.optical-components.com /beam-splitter.html (228 words)

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