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FlashlampsFlashlamps advancedadvanced technology technology FlashlampsFlashlamps advancedadvanced technology technology APPLICATIONSAPPLICATIONS Scientific research Lasers, spectroscopy, photochemistry... Medicine Lasers or IPL for dermatology, hair removal. Retinography, laser surgery… UV disinfection (mercury-free) Industry Lasers for cutting, drilling, welding, marking… Surface treatments Photography Flashlight equipments for professional photography Stroboscopy Signal lights, video imaging, illumination effects… Photography by courtesy of Michel Hans Solar simulation Photovoltaic cells, material testing Aerospace industry Airport runway lighting, anticollision lighting systems. Neon beacons Printing & reprography IR applications (printing, reprography…) © FLASHLAMPS - Verre & Quartz - 2005 The “Flashlamps - Verre & Quartz” Company Page 2 Flashlamps and Arc lamps Pages 3 to 9 Technical Overview Standard Linear Flashlamps Pages 10 to 13 JA Series Standard Linear Arc Lamps Pages 14 to 17 DC Series High Average Power Pulsed Flashlamps Pages 18 to 19 DU Series Standard Linear Types Pages 20 to 23 Standard Series Standard Helical Types Pages 24 to 27 Photo Flashtubes Pages 28 to 33 Studio Photography & Instantaneous Phenomena Stroboscopic Xenon Flashtubes Pages 34 to 37 Low Power Borosilicate Flashtubes Low, Medium & High Power Quartz Flashtubes Trigger Transformers Pages 38 to 39 External & Series Triggering 1 THE “FLASHLAMPS - Verre & Quartz” COMPANY The “Etablissements Diot Frères” installations were Les “Etablissements Diot Frères” débutent la fabrication manufacturing silica tubings from crystals of quartz, and de tubes de silice à partir de cristaux de quartz, et se spé- specialized in tight silica-to-tungsten seals since 1928. cialisent dans les soudures silice-métal dès 1928. Les pre- The first flashlamps (Hg) were manufactured in 1936. mières lampes à éclairs (Hg) sont produites en 1936. La The establishments changed to the Verre & Quartz société change de nom et devient “Verre & Quartz” en Company in 1947. The main activity is to manufacture 1947. La société produit principalement des lampes UV UV mercury lamps of quartz, and also X-rays lamps : the en quartz ainsi que des lampes aux rayons X : elle béné- Company rapidly gets its notoriety in the medical field. ficie alors d’une excellente notoriété dans le monde médi- High power flashtubes already used in studio photogra- cal. Des lampes flash de grande puissance pour la photo- phy : many 10 kJ flashtubes were successfully used graphie apparaissent en 1953, et des lampes de 10 kJ sont (1953). In the early 60’s, Maiman experimented the first alors utilisées avec succés. Dès 1960, le premier laser worldwide laser pumped by an helical flashlamp, allo- pompé par lampe à éclairs hélicoïdale est mis au point wing Verre & Quartz to extend its production of flash- par Maiman : cela permet à Verre & Quartz de diversifier lamps, used as new optical sources for solid-state laser sa production de lampes dans l’intention de les utiliser pumping. In collaboration with well-known technical ins- comme sources de pompage des lasers à solide. En colla- titutes and Research Laboratories, Verre & Quartz deve- boration avec des instituts techniques et Laboratoires de loped flashlamps which became highly sophisticated pro- Recherche renommés, Verre & Quartz a développé des ducts requiring manufacturing techniques more and more lampes flash très élaborées, faisant appel à des techniques reliable. Low power borosilicate flashtubes and low size de fabrication de plus en plus fiables. Apparition en 1963 quartz flashlamps have been appearing in 1963, thanks de lampes borosilicates de faible puissance, puis de to a new method of achievement of sealing glass. The first lampes en quartz de moyenne énergie complétant la pro- realisation of solid-state lasers (Ruby and Neodymium) duction générale, grâce à une nouvelle méthode de réali- took place in 1965. This fabrication is forsaken in favour sation des verres de transition pour soudure verre/métal. of the flashtubes. The lamps for studio photography were La société produit aussi des lasers rubis et Néodyme-verre benefiting the great improvements realized for lamps en 1965. Cette activité est néanmoins rapidement aban- intended for optical pumping of lasers, particularly the donnée au profit de la production des lampes à éclairs. technique of “shrunk electrodes” or the elaboration of Les lampes pour la photographie professionnelle ont pro- new types of emissive dopants as well as their concentra- fité des progrès importants dont les lampes laser ont tion and homogeneity in the tungsten matrix. Thanks to bénéficié, en particulier la technique des électrodes pin- the Eureka project “High power solid-state laser”, new cées ou bien l’élaboration de nouveaux types de composés technologies allow the lamps to reach very great average émissifs contenus dans la matrice tungstène, leur concen- powers. tration et leur homogénéïté. Grâce au projet Eureka The first well-known customers were Marie Curie, J. “Laser à solide de forte puissance”, les nouvelles techno- Perrin, then A. Kastler and Leprince-Ringuet. logies permettent maintenant aux lampes d’atteindre de Now, at the start of the 21th Century : Flashlamps Verre & très hautes densités de puissance moyenne. Quartz is glad to present a great variety of flashlamps for Les premiers clients prestigieux se nomment Marie Curie, each type of applications. J. Perrin, puis A. Kastler et Leprince-Ringuet. We will be honored by your trustfulness for study and Maintenant nous abordons le 21ème siècle : la société realization of all services and manufacturings meeting Flashlamps Verre & Quartz est fière de vous présenter sa your requirements and giving you the benefit of our long large gamme de lampes à éclairs pour tous types d’appli- experience. cations. La confiance que vous nous accorderez lors d’études et de réalisations de services ou de fabrications nous honorera, en respectant vos exigences et en vous fai- sant bénéficier de notre longue expérience. 2 Flashlamps and Arc Lamps : Technical Overview Presentation… Re-entrant seal standard electrodes Another type of electrodes is also used thanks Flashlamps and arc lamps are currently used in dif- to “re-entrant seal” method. The allowed power ferent application fields such as optical laser pum- densities reach 70 W.cm-2. The seal technique ping or studio photography and stroboscopic ana- consists of the sealing of the tungsten rod with lysis of ultra-fast phenomena. the invert part of the quartz on two points, lea- Laser pumping (solid-state, dye…) needs a very ding to a stronger mechanical stability. The important light source characterized by its very dead volume region is totally modified and the great optical power, in order to fill the upper ener- shock waves from the plasma expansion during gy levels of the active medium. Solid-state lasers are each pulse cause lower strengths on the seal. often Ruby, Nd : glass, Nd : YAG, Alexandrite, Ti : Sapphire and many others. It is also possible to Flashlamps : “Standard Series” for lasers, “pump” dye lasers (such as for example the photography and stroboscopy. Rhodamine 6G) for which a very short pulse dura- tion is required to reach the high levels of the exci- tation bands of the solution. The rare gas lamp emission characteristics give a very interesting light source in the visible region of the spectrum, especially useful for photography (the light appears “white”) and stroboscopy. Mechanical characteristics GLASS TO METAL SEALS Standard Electrodes One of the most important part of a flashlamp construction is the introduction of the tungsten electrode in the lamp silica body. The currently Shrunk electrodes used method is the glass-to-metal seal, i.e. the Beyond 70 W.cm-2, lamps must preferentially be seal of the tungsten rod and the glass. This tech- used in a water cooling system. The very high nique has several advantages, such as the extre- temperatures reached in the electrode body me precision of the mechanical characteristics impose an important cooling. The technique from one lamp to the other, the faculty to whits- used consists of “shrinking” the electrode on the tand very high peak currents or average cur- quartz itself. The heat removal is made easier rents and the accessible temperatures during and the power densities in pulsed regimes may lamp working. The great stability of such a seal be as high as 200 W.cm-2, and 350 W.cm-2 in CW allows manufacturings of flashlamp series. use (wall thickness 0,5 mm). This technique gives on the other side a very great mechanical stability, and is currently used. ELECTRODES TYPES Flashlamps : “JA, DC, DU Series” for lasers Standard electrodes “JA Series” for photography” Used for low power densities (typically 40 W. c m -2). The electrode temperatures do not reach values that impose to the lamp to be used at the limit of its maximum average power, so it is not necessary to place the electrode closed to the quartz envelope to ensure a better cooling. These lamps are often used with a classical air cooling system with respect of the maximum average power given for each model. Forced air Shrunk Electrodes coolings allow to increase threefold the value of maximum power. 3 DESCRIPTION OF THE ELECTRODES ENVELOPE The anode is principally composed of pure or Lamps are principally composed of cylindrical thoriated tungsten. Generally of massive envelopes made of transparent silica glass or construction, the anode must whitstand very sometimes borosilicate (low power
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