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	Etalons from LightMachinery Inc.
		Solid etalons, air spaced etalons, piezo tunable etalons, LightMachinery has extensive expertise in the manufacturing and testing of all kinds of Fabry Perot etalons from 1mm square to 100mm in diameter.
		The spacers need to be made to etalon tolerances since the spacer determines the separation and tilt between the two end plates.
		A tunable Fabry Perot etalon uses piezo electric cylinders to adjust the size of the air gap and sweep the peaks of the etalon.
	www.lightmachinery.com /fabry-perot-etalons.html (845 words)

	Method of manufacturing etalon - Patent 6942812
		Then, a gas having a chemical reactivity with respect to a material of the etalon base plate is introduced into the process chamber, and a surface of the etalon base plate is etched for only a predetermined time corresponding to a thickness of the etalon base plate, thereby obtaining the etalon having a desired thickness.
		In the solid type etalon, a peak wavelength of transmitted laser is determined by a thickness d of the etalon, a refraction index n of a material of the etalon and an incident angle θ of the laser beam with respect to the etalon.
		The etalon base plate is installed in a reaction chamber, and a gas having a chemical reactivity with respect to the etalon base plate is introduced into the reaction chamber.
	www.freepatentsonline.com /6942812.html (3484 words)

	eoPortal directory: Etalon
		Etalon is a geodetic passive satellite family of two identical spacecraft of Russia (former USSR).
		Objectives of the project: Etalon is dedicated entirely to satellite laser ranging (SLR) to permit solid Earth studies: geodynamic processes, development of high accuracy global references, long-period disturbances, geopotential modelling, etc.
		GFZ of Potsdam, Germany, is the data collection and distribution center for Etalon laser measurements in Europe.
	directory.eoportal.org /pres_Etalon.html (388 words)

	Etalon Acoustics
		Rounding up the presence of world famous Hungarian composers and performers in the art of music, Etalon Acoustics is working in the field of reproduced music.
		From the microphones in the recording room up to the loudspeakers used in the listening room of music lovers at home, ETALON is the only company in the world with an activity range and self developed products that span this entire field.
		ETALON amplifiers have been compared to Audio Research, Jadis, Lectron, Cello, Conrad Johnson, Primare, Accuphase, Burmester, Gryphon, YBA, Goldmund, Naim, Linn, Mark Levinson, Krell, Threshold, Jeff Rowland, Spectral, Classé Audio, FM Acoustics, etc. etc.
	www.etalonacoustics.com /company.htm (345 words)

	Features of Lexel lasers: Single-frequency operation (Site not responding. Last check: 2007-10-10)
		In order to tune an etalon it is necessary to vary its effective length either by increasing the etalon tilt angle or by changing the index of refraction.
		The airspaced etalon consisting of two thin windows bonded to a hollow, thermally stable spacer was developed to overcome this difficulty.
		Although the air-spaced etalon produced good thermal stability, the walk-off loss that accompanies the required angular tuning and the additional reflection losses caused by the two extra optical surfaces often result in reduced laser power.
	www.lexellaser.com /techinfo_features_single-freq.htm (1549 words)

	Fabry-Pérot interferometer - Wikipedia, the free encyclopedia
		(Technically the former is an etalon and the latter is an interferometer, but the terminology is often used inconsistently.) Its transmission spectrum as a function of wavelength exhibits peaks of large transmission corresponding to resonances of the etalon.
		Etalons are widely used in telecommunications, lasers and spectroscopy for controlling and measuring the wavelength of light.
		The varying transmission function of an etalon is caused by interference between the multiple reflections of light between the two reflecting surfaces.
	en.wikipedia.org /wiki/Etalon (1208 words)

	Etalon Reduction
		Etalon fringes consist of periodic ripple in the transmitted laser power.
		This ripple is usually the factor that limits the sensitivity of a diode laser measurement of a trace gas concentration.
		Etalon fringes arise when light follows two paths from the laser to the detector.
	www.swsciences.com /technology/patents/et1.html (366 words)

	Improved Etalon-Type Fiber-Optic Hydrogen Sensors
		In this configuration, light would be delivered to the etalon from a remote source via a first optical fiber, and light transmitted through the etalon would be delivered to the photodetector(s) or spectrometer via a second optical fiber.
		In this case, the etalon could be fabricated on the polished output end of the first optical fiber, and the airgap would lie between the etalon and the input end of the second optical fiber.
		(Alternatively, the etalon could be fabricated on the end of the second optical fiber.) The core of the second fiber would be made wider than the core of the first fiber so that the second fiber could capture all of the transmitted light, without need for a collimating and a focusing lens.
	www.nasatech.com /Briefs/Nov01/KSC11981.html (1535 words)

	Etalon 1, 2 (Site not responding. Last check: 2007-10-10)
		Etalon are a Soviet / Russian family (Etalon-1, Etalon-2) of passive geodetic satellites dedicated to satellite laser ranging.
		The Etalon spacecraft were launched in 1989 in conjunction with a pair of GLObal'naya NAvigatisionnay Sputnikovaya Sistema (GLONASS) satellites.
		The mission objectives were to determine a high accuracy terrestrial reference frame and earth rotation parameters; to improve the gravity field, and to improve the gravitational constant.
	www.skyrocket.de /space/doc_sdat/etalon.htm (323 words)

	Etalon
		Soviet passive geodetic satellites; Etalon means “standard.” Each is spherical and covered with 306 antenna arrays, each array containing 14 corer cubes for laser reflection.
		Etalons were designed and launched to enable the complete characterization of Earth’s gravitational field at the altitude and inclination planned for the Glonass navigation satellites.
		Only two Etalon satellites have been orbited, each accompanied by a pair of GLONASS satellites.
	www.daviddarling.info /encyclopedia/E/Etalon.html (181 words)

	Etalon's Musicante Examplissimo Amplifier Review By Jeff Rabin
		Etalon defines their integrated as a 'power amplifier with integrated passive amplifier,' believing that there are impossible sacrifices to be made by incorporating an active pre-amplifier in the same box as the power amplifier.
		And because the Etalon speakers I was using with the amplifier were not overly keen on classic rock (and I am, particularly in the morning) they were not fed that much.
		Etalon is of course a very small manufacturer based in Budapest whose principal distributor in the way of the ever-ebullient Paulo Wang is in Brazil, but Mr.
	www.enjoythemusic.com /magazine/equipment/0904/eaton.htm (2722 words)

	Brewing industry international awards 2004
		After it won the Gold Medal of the World Beer Cup® 2004, the Ukrainian-made Pshenychne Etalon was recognized the best wheat beer at the Brewing Industry International Awards 2004 – the most prestigious international beer competition in Europe.
		On May 25, 2004, at the gala BIIA awards ceremony in London, Pshenychne Etalon was granted the Gold Medal in the Wheat Beer category – for the first time in Ukrainian and CIS history.
		The weissbier Pshenychne Etalon was granted the gold medal in the Wheat Beer category.
	www.etalon-beer.com.ua /eng/etalon/biia (611 words)

	Etalon Fitting Routines
		As the laser's frequency changes, it periodically comes into resonance with the etalon's mirror cavity: every gigahertz (roughly) we see a peak in transmission through the cavity.
		If we record the transmission through the etalon while ramping the laser, we get a trace that can be described by an Airy function (5.1).
		The source code for these fitting routines, which are now a part of the Etalon object, was half computer-translated from the UW Fortran code to C by f2c , and half hand-translated.
	www.williams.edu /Physics/pmajumder/thesis/thesis-text/node53.html (295 words)

	Etalon Micrometer and Dial Micrometer (Site not responding. Last check: 2007-10-10)
		The micrometer is always mounted on a stand so that both hands are free to insert, inspect, and remove the machined parts.
		Etalon writes, "Every micrometer is supplied ready for use and inspected.
		The new assembly is expensive (part #109699) but it'll make an Etalon indicating micrometer usable again.
	www.longislandindicator.com /etalon.html (973 words)

	Etalon Acoustics 'Carefully Handmade in Hungary' Medio Loudspeakers Review By Jeff Rabin
		But if dear Albert were in the market for a pair of speakers, I submit, without reservation, that the father of the general theory of relativity would not go too far wrong with Etalon's Medio Loudspeakers.
		And here is an example of Hi-Fi cosmopolitanism at is greatest: Etalon is a Hi-Fi company that comes to us from Hungary — a land where they play chess in the sauna — by way of an enthusiastic distributor in Brazil, a land where the girl from Ipanema certainly does not.
		The bass/midrange drivers are of doped, almost rough, paper and the drivers are made in-house.
	www.enjoythemusic.com /magazine/equipment/0804/etalonacoustics.htm (1728 words)

	Open Channel Foundation: Etalon Model
		The model may be used to determine the sensitivity of the filter to temperature changes, thickness tolerances, or alignment angles of an etalon design.
		The calculations are done for two etalons: The first etalon which is the collimated, untilted etalon, is placed in a collimated optical beam with the beam at normal incidence; the second etalon which is the uncollimated, tilted etalon is placed in a converging beam at non-normal incidence.
		The program is intended to be used for comparison of measurements of an etalon in a collimated beam with the performance of the etalon in an alternative system.
	www.openchannelfoundation.org /projects/Etalon_Model (270 words)

	Wedged Etalon Simplifies Wavelength Tuning of Miniature Laser
		The concept is to include a wedged etalon in the monolithic laser and to tune the laserâs wavelength by translating the entire laser transverse to the pump beam (Figure 1).
		A wedged etalon â” an etalon with a wedge-shaped gap between the two reflecting surfaces â” is different in several ways from a conventional (parallel plate) Fabry-Perot etalon, and the investigators examined these differences to ensure that none would seriously impede the laserâs operation.
		The ~2.5-mm-diameter etalon reflectors had reflectivities of 70 percent (the back surfaces were antireflection-coated), and wedged with a spacing that varied from 1.1 to 1.3 μm across the diameter.
	www.photonics.com /content/spectra/2006/September/research/84250.aspx (771 words)

	TecOptics Etalons >> Introduction (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-10)
		We supply etalons for laser line narrowing, laser monitoring, astronomy, UV microlithography, optical communications, remote sensing, and a myriad of other industrial and research applications.
		Although most of our etalons are custom-designed we stock standard substrates with clear apertures of 20mm, 25mm, and 30mm diameters.
		A Fabry-Perot etalon (or simply, an etalon) is the simplest form of a Fabry-Perot interferometer.
	www.tecoptics.com.cob-web.org:8888 /etalons/index.htm (219 words)

	NPL Low Drift Etalon
		The data was recorded by locking a single frequency laser to the transmission of each of the etalons and monitoring the resulting beat frequency between the test laser and an iodine stabilised He-Ne reference.
		The NPL low drift etalon has extremely low overshoot and settles in a fraction of the time of conventional etalons.
		The use of a longer etalon with accordingly lower free spectral range and sensitivity is sometimes used to reduce the effects of overshoot.
	www.npl.co.uk /length/wss/services/equipment/etalons.html (390 words)

	Etalon - Russia and Communications Satellite Systems
		In contrast to GEO-IK, the Russian Etalon satellites reside in high altitude (19,100 km) orbits and are completely passive in nature.
		To date only two Etalon satellites have been orbited, Kosmos 1989 (10 January 1989) and Kosmos 2024 (31 May 1989), and each accompanied a pair of GLONASS satellites on Proton launch vehicles.
		The effect of non-gravitational forces on the orbits of the Etalon satellites was reported in late 1990 and further studies, including the effects of the Sun and the planets, were released in late 1993 (References 484-486).
	www.globalsecurity.org /space/world/russia/etalon.htm (215 words)

	World Beer Cup
		Pshenychne Etalon, a Ridna Marka Corporation product, was judged the best in the South German-Style Hefe-Weissbier category and awarded a gold medal at the World Beer Cup® 2004.
		Interestingly, Pshenychne Etalon won in the category with the greatest number of entries (56), beating German brands (two of which placed second and third) on their own turf.
		Pshenychne Etalon is an original wheat beer made in Ukraine by Ridna Marka Corporation at the specialized wheat beer production facility, built and commissioned by the Beer and Nonalcoholic Beverages Combine Radomyshl in October 2003.
	www.etalon-beer.com.ua /eng/etalon/wbc (430 words)

	TecOptics Etalons >> Fabry-Perot Etalon Theory
		The equation for the transmission of an ideal etalon, an Airy Function, is
		Another useful concept for etalons is the finesse (F).
		Imperfections in the etalon such as not-perfect flatness and parallelism will degrade the finesse.
	www.tecoptics.com /etalons/theory.htm (158 words)

	Lexel Model 503 Etalon Assembly (Site not responding. Last check: 2007-10-10)
		Provides movable seals between the etalon tuning plate and the mirror tuning plate.
		It is recommended that Lexel lasers operated with the Model 503 Etalon Assembly also be equipped with the Model 500 Temperature Compensated Prism Wavelength Selector.
		The Model 503 Etalon Assembly is sold only for use in Lexel ion lasers.
	www.lexellaser.com /techinfo_features_single-freq_503-etalon.htm (331 words)

	Etalon-Jenavi
		When production began to extend the company has bought a building of an old Petersburg factory "Etalon" which had been ruined during "perestroika" in the USSR.
		Many workers were provided with working places and the historical name of the factory "Etalon" has got the rebirth in the trade mark of the company "Etalon-Jenavi".
		The trade mark "Etalon-Jenavi" was registered in 2001 and it is the only jewelry bijouterie manufacturer in Russia.
	www.etalon-jenavi.com /company.php?lan=eng (468 words)

	Gunboards - Etalon....Dimensions? (Site not responding. Last check: 2007-10-10)
		AIM's ad states "ETALON ammo is top lot ammunition where all parameters like gas pressure, accuracy, velocity and dimensions show the least tolerance fluctuation possible." I wonder how consistent this stuff really is, when one batch is loaded with 147-148 grain bullets and the next is loaded with 180 grain bullets.
		The powder in the "old" Etalon stuff seems different from the powder in the "new" Etalon.
		For the "old" Etalon, it was 1.257" vs 1.469" for the "new" Etalon.
	www.gunboards.com /forums/topic.asp?TOPIC_ID=633 (950 words)

	etalon (Site not responding. Last check: 2007-10-10)
		The arrangement of the Fabry-Perot interferometer (see figure L29.2) uses two glass plates to form the reflecting surfaces.
		The pair of parallel plates is called an etalon.
		For good performance we require a fairly large (few mm) plate separation, set accurately parallel, and partly silvered to increase the reflectivity.
	www.cmmp.ucl.ac.uk /~ahh/teaching/1B24n/lect29/node3.html (70 words)

	Michigan Aerospace Corporation - Cryogenic Etalon
		To design, fabricate, and test a spaceflight qualified tunable Fabry-Perot etalon.
		Michigan Aerospace Corporation is presently contracted with NASA Langley Spaceflight Center to design, fabricate and test a spaceflight qualified tunable Fabry-Perot etalon.
		Titanium (Ti-6Al-5V Grade 5) is used for the etalon mount due to its low density, high strength, and coefficient of thermal expansion.
	www.michiganaero.com /business_units/lidar/cryogenic.shtml (100 words)

	Custom High-Performance Ultrasonic Transducers and Sensors for Medical and Industrial Applications
		Although Etalon does not offer off-the-shelf products, we have a vast database of past ultrasonic transducer projects that can be used in many cases as a base for new semi-custom or modular products.
		In other cases, your needs may require a comprehensive engineering / development phase, and Etalon's personnel and resources are unmatched in new product development.
		Whether your needs are for semi-custom, modular, or pure custom products, Etalon is committed to minimizing your costs and turnaround times, while producing the best ultrasonic transducers, sensors, and systems available.
	www.piezotechnologies.com /etalon.htm (301 words)

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