Pellin Broca prism

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	UV Dispersing Prisms
		A Pellin Broca prism is a constant deviation (90°) dispersing prism and is useful for single wavelength selection.
		Dispersing prisms are used to separate the wavelengths of light.
		The Littrow version is a retro-reflecting Brewster prism and is often used in laser cavities.
	www.lambda.cc /PAGE38.htm (110 words)

	Pellin Broca Prisms
		Pellin Broca prisms are constant deviation (90°) dispersing prisms.
		These prisms provide a convenient way to compensate for group velocity dispersion in ultra-fast lasers or to separate harmonic wavelengths in an incoming laser beam.
		The input angle is arranged so that total internal reflection occurs at the internal face.
	www.lambda.cc /PAGE133.htm (103 words)

	Abbe prism - Wikipedia, the free encyclopedia
		In optics, an Abbe prism, named for its inventor, the German physicist Ernst Abbe, is a type of constant deviation dispersive prism similar to a Pellin-Broca prism.
		The prism is designed such that one particular wavelength of the light exits the prism at a deviation angle (relative to the light's original path) of exactly 60°.
		The dispersive Abbe prism should not be confused with the non-dispersive Porro-Abbe or Abbe-Koenig prisms.
	www.wikipedia.org /wiki/Abbe_prism (193 words)

	Intra-cavity total reflection for high sensitivity measurement of optical properties - Patent 5943136
		A first prism surface 20a of the prism 20 is coated with the same high reflective coating as is the concave reflector 10.
		A further prism surface 20c must be anti-reflection coated over the design wavelength of cavity 6, to minimize losses resulting from the normal incidence of light beam 16, on surface 20c.
		Prism surface 14a is a totally reflecting surface where absorbing materials are probed.
	www.freepatentsonline.com /5943136.html (3818 words)

	Newlight Photonics - Supplier of BBO, LBO, KTP, KTA, BiBO, Nd:YVO4, Nd:YAG crystals
		Prisms are blocks of optical material with flat polished sides arranged at precisely controlled angles to each other, which deflect, deviate and rotate beams of light as well as dispersing their wavelengths.
		It is often used as a dispersion prism.
		And when the prism is rotated about the input parallel ray through some angle, the image rotates through twice that angle.
	www.newlightphotonics.com /prisms.html (328 words)

	EV-CRDS Pellin-Broca Expt.
		Light enters and exits the Pellin-Broca prism at Brewster’s angle to minimize Fresnel reflection losses.
		The sample contacts the back side of the Pellin-Broca and absorbs the evanescent wave emanating from the TIR site.
		The prism was fabricated with an accuracy of 3 arc-min from high-purity fused-silica with an estimated bulk attenuation of 50 ppm/cm.
	www.cstl.nist.gov /div838/crds_web/pellin1.htm (140 words)

	EKSMA - Optical Components
		In a Pellin-Broca prism, an ordinary dispersing prism is split in half along the bisector of the apex angle.
		Wedge prisms are available in alternative materials, such as synthetic fused silica, and in different shapes and sizes, or with various anti-reflection coatings.
		The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads, because they are easier to mount, and deform much less than mirror in response to external mechanical stress.
	www.microcontrolnt.com /prodotti/eksma/optical_components/prisms.htm (534 words)

	Abbe prism
		In optics an Abbe prism named for its inventor the German Ernst Abbe is a type of constant deviation dispersive prism similar to a Pellin-Broca prism.
		The prism is designed such that particular wavelength of the light exits the prism a deviation angle (relative to the light's path) of exactly 60°.
		The prism consist of a block of forming a right prism with 30°-60°-90° triangular faces.
	www.freeglossary.com /Abbe_prism (494 words)

	Pellin-Broca Prisms - Prisms
		The entire prism deflects light of this wavelength by exactly 90°; for this wavelength the spectroscopic angular dispersion is maximum.
		The three polished surfaces of the prism produced from one block have a surface accuracy of λ/10.
		the 60° dispersing prism) are transmitted in the so-called minimum of deviation" by light of one wavelength.
	www.b-halle.de /English/Catalog/Prisms/Pellin-Broca_Prisms.htm (290 words)

	Variable transmission output coupler and deviationless tuner for tunable lasers - Patent 4723841
		The adjustable pressure exerted by the compression block 22 on the prism 17 controls the thickness of the gap or air film 30a between the two opposing faces 30 of the prisms 16 and 17.
		By rotating the stage 13 carrying the prism assembly around the axis 31, negligible deviation of the output beam over the entire tuning range of the laser is assured.
		Variable pressure is exerted against the side face of the prism 17 which is remote from and parallel to the locator block 20 by a compression block 22 immediately above and on the carriage plate 15.
	www.freepatentsonline.com /4723841.html (1612 words)

	Definition for word(s) Pellin-Broca prism - The Photonics Directory
		The particular ray that would pass through the 60° prism in minimum deviation is turned through a right angle in the Pellin-Broca prism, for which reason the latter often is referred to as a constant deviation prism.
		A form of dispersing prism, often used in monochromators, that consists of a common right-angle prism with a 30° dispersing prism attached to each of its square faces.
		When this prism is rotated about an axis parallel to the refracting edges, the spectrum moves laterally past the exit slit of a monochromator.
	www.photonics.com /dictionary/lookup/XQ/ASP/url.lookup/entrynum.3818/letter.p/pu./QX/lookup.htm (157 words)

	Articles - Pellin-Broca prism
		A Pellin-Broca prism is a type of constant deviation dispersive prism similar to an Abbe prism.
		The prism is commonly used to separate a single required wavelength from a light beam containing multiple wavelengths, such as a particular output line from a multi-line laser.
		The refraction of the light as it enters and exits the prism is such that one particular wavelength of the light is deviated by exactly 90°.
	www.gaple.com /articles/Pellin-Broca_prism (320 words)

	APS - 2005 36th Meeting of the Division of Atomic, Molecular and Optical Physics PostDeadline - Event - High-efficiency phase-shaped ultra-broadband non-collinear optical parametric amplifier (NOPA)
		The design is based on two stages amplification in 2mm thick BBO crystals, and it uses a Pellin-Broca prism placed in the pump's path.
		The purpose of the prism is to stretch the pump in time and to increase its chromatic angular divergence, both effects enhancing the amplified bandwidth.
		The compression is coarsely attained with a BK7 prism compressor and then finely tuned with the LCM, by using a SHG signal in a 40 $\mu $m BBO crystal as feedback in a genetic algorithm (GA) run.
	meetings.aps.org /Meeting/DAMOP05/Event/30386 (266 words)

	oe magazine - a clear solution
		A Pellin-Broca prism at the exit of the cell disperses the beams.
	oemagazine.com /fromTheMagazine/may01/clearsolution.html (1410 words)

	More on Optics
		Dispersing Prisms - typically, a ray entering a dispersing prism, will emerge having been deflected from its original direction by d (angular deviation); From this expression, it is clear that d increases with n, which is itself a function of frequency, so we might designate the deviation as d(l) or d(n).
		Reflecting Prisms - dispersion is NOT desirable; beam is introduced such that at least one internal reflection takes place: used for 1) changing direction of propagation or 2) changing orientation of image or 3) both.
		effectively make prism out of material, measure a, and dm, n(l) is computed using this equation at every l of interest.
	www.chm.colostate.edu /erf/teaching/c532/optics2.htm (1865 words)

	29769.030410&ELEMENT_SET=DECL
		In this approach, an optically dispersive element, such as a prism or diffraction grating, is used to separate the spectral frequencies present in the incident light radiation.
		The apparatus of claim 3, wherein the prism is substantially transparent to IR wavelengths.
		[0064] In either case of using a prism or a diffraction grating, optically dispersive element 350 may be adjustable with respect to an angle of inci- dence between its surface and incident light which is projected onto the sur- face.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/29769.030410&ELEMENT_SET=DECL (10900 words)

	spectro!.htm
		A 1° error in the prism angle and in the deviation angle, this causes an error of 0.045 in the index of refraction.
		The prism must be adjusted so that the faces which include the angle to be measured are both parallel to the axis about which the telescope and table turn.
		Ask students to watch the prism as you rotate it in one direction while you verbally describe what you see: "The spectrum is moving to the right; it's slowing down; now turning around; now moving to the left." This simple demonstration is actually quite effective in getting the idea across.
	www.lhup.edu /~dsimanek/scenario/labman3/spectro!.htm (5040 words)

	Knight Optical (UK) Ltd Dispersing prisms - Pellin-Broca Type
		The Pellin-Broca “constant-deviation” Prism, also manufactured in UV fusd silica, is used as a monochromator and laser-line selector.
		Pellin-Broca Prisms output is always taken at 90º to the input.
		The Equilateral Prisms listed are supplied in three types of material, UV fused silica for use in the ultraviolet and infrared (170-2500), and flint glasses for visible spectrums.
	www.knightoptical.co.uk /acatalog/PrismsDispersingprisms-Pellin-BrocaType.htm (315 words)

	Pellin
		We offer Pellin-Broca prisms uncoated but special coatings can be applied on request.
		We can supply Pellin-Broca prisms in the following standard sizes: 20, 30, 40 mm.
		The beam is input into the base of the prism such that total internal reflection occurs at the opposite face.
	www.optarius.co.uk /pellin_broca.htm (154 words)

	Nuova pagina 3
		Wavelength separation is obtained by means of a “Pellin-Broca” prism after which all unnecessary radiations are dumpered (Figure 3).
		The laser power is controlled by an optical attenuator consisting of a rotatable zero-order half-wave plate, a high power UV prism and a beam dump.
		Using mirrors, the 213 nm laser beam is carried into a petrographic microscope, focused above the sample, and then projected onto it.
	www_crystal.unipv.it /213.htm (123 words)

	CVI Laser
		This unique prism table is only 1.4" wide and offers independent control of roll, pitch and yaw.
		No other prism table on the market offers this much control in such a small package.
		Rotate it with the 1100 rotary mount for optics 0.5" to 1" in diameter.
	www.cvilaser.com /Catalog/Pages/Template1.aspx?pcid=111&filter=0 (144 words)

	Chapter 2
		The excitation laser beam is passed through a Pellin-Broca prism, which separates the dye laser fundamental output, from the doubled laser light.
	www.tlchm.bris.ac.uk /pt/diamond/jamessthesis/chapter2.htm (4351 words)

	NASA SLR2000 uchip laser
		The beams were separated using a Pellin-Broca prism.
	www.qpeak.com /Compsbir/B2191summary.htm (1070 words)

	Process for making thin polymer film by pulsed laser evaporation - Patent 5192580
		The overlapping fundamental, first harmonic and second harmonic lines were separated by a UV grade fused silica Pellin Broca prism placed about 5 inches away from the harmonic generation assembly.
		When a Nd-YAG laser is used, a harmonic generator 5a and a pellin-broca 6 prism are incorporated into the path as shown in FIG.
		Typical lasers useful in the practice of this invention are a Nd-YAG laser at wavelength 266 nm, fourth harmonic beam thereof, such as Spectra-Physics DCR-11, and KrF or ArF excimer lasers at wavelengths of 248 nm and 193 nm respectively, such as the Lambda Physik EMG 202.
	www.freepatentsonline.com /5192580.html (3860 words)

	Experimental
		A single quartz Pellin Broca prism is used to separate 213 nm from the other wavelengths, which are intercepted by beam stops.
		The two crystals are cut for type I phase matched 4th and 5th harmonic generation of the 1064 nm fundamental.
		The photolysis beam enters the FTIR spectrometer (Magna-IR 560 from Nicolet) through a quartz window (W
	www.agu.org /pubs/toc/gl/gl/gl0016/1999GL011236/node2.html (737 words)

	OFR Prisms
		The 45-45-90 degree Prism is the most commonly purchased of all our Prisms, and has several applications: to produce 90° reflection of light, to retro-reflect light (Porro Prism), and even as a front-surface mirror with the hypotenuse aluminized.
		High index of refraction prisms are used for the coupling of light into films for the purpose of measuring film thickness and refractive index.
		All three prism faces are polished to ¼-wave flat, and the 90° corner is sharp (no bevel).
	www.ofr.com /oc-30_prism.htm (349 words)

	Generation of Coherent Radiation Continuously Tunable in 500-650 nm Range
		The second harmonic beam was separated from the fundamental beam using Pellin-Broca prism.
		Maximum energy per pulse achieved at 1190 nm was 40 mJ.
	www.qpeak.com /Papers/CLEO99lif/CLEO99lif.htm (444 words)

	Abstracts
		The plasma lines from the laser are almost completely rejected by a Pellin -- Broca prism combined with apertures.
		This system is based on a CW (continuous-wave) ultraviolet argon-ion laser (363.8 nm), a spatial filter, a single monochromator coupled to a double-grating rejection filter, and a two-dimensional charge-coupled device (CCD) detector.
		In situ Raman measurements for a zirconia (ZrO2) specimen at various high temperatures have been performed by using the UV excitation as well as the conventional visible 488.0-nm excitation for comparison.
	www.s-a-s.org /journal/97/aug97_ea2.htm (5087 words)

	Fast, long-range, reversible conformational fluctuations in nucleosomes revealed by single-pair fluorescence resonance energy transfer -- Tomschik et al. 102 (9): 3278 -- Proceedings of the National Academy of Sciences
		beam was focused into the prism at an angle >65.7° (12),
	intl.pnas.org /cgi/content/full/102/9/3278 (4394 words)

	HANS MOOSMULLER, Atmospheric Sciences Division, Desert Research Institute
		Moosmüller, H. Brewster's Angle Porro Prism: A Different Use for a Pellin-Broca Prism.
		Engineering and Laboratory Notes, a supplement to Opt.
	www.dri.edu /People/hansm (356 words)

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In the News (Wed 30 Dec 09)