Vacuum Optics Catalogue - June 2021

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Fused Silica Zero Length ViewportsFused Silica ZeroLength ViewportsSeal TypeMaximumTemperatureMinimumTemperatureMaximum Rateof TemperatureChangeLeak RateP re s s u re R a n g eS u r f a c e Q u a l i t yParallelismFlatnessLaser DamageThresholdSpecificationTorr Scientific fused silica viewports are offered in CF, ISO and KF flange styles. The viewports comprisea high purity laser quality fused silica optic with precise flatness, parallelism, scratch and digspecifications. The ultra high vacuum (UHV) CF versions are offered using high grade 304L or 316LNstainless steel flanges. Non-magnetic viewports are offered for low energy applications or surfacescience applications needing low magnetic fields. The non-magnetic viewports use a non-magneticweld ring instead of the regular kovar weld ring. Flanges in 304L stainless steel are used for the highvacuum KF and ISO viewports. TSL viewports are manufactured in cleanroom conditions and heliumleak tested, cleaned and packed to UHV standards. The rugged construction of the fused silicaviewports allows repeated bake-out with UHV performance, whilst the window offers broadbandoptical transmission through deep UV, visible to near infra-red. Various anti-reflective coatings tomatch customer reflectance requirements are processed at TSL and available as options listed inthe AR coated viewport section of the catalogue. Laser viewports with a VAR coating optimisedfor specific customer specified laser wavelength, reducing reflectance to below 0.5% per face, arealso offered. Non-standard viewports can be manufactured on request, including re-entrant stylemicroscope/camera viewports. Annealed copper gaskets and other component accessories are alsosupplied by TSL.Braze200 °C (KF & ISO versions 150°C)minus 20 °C3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -9 mbar20/10 scratch/dig< 3 arc minutes< 8λ (λ/8 at 632.8 nm over 75%of central area before brazing)CW Continuous Wave - 500 W/cm 2 at 530 nmPulsed 2 J/cm 2 at 530 nm and 10ns pulse width(note, varies with wavelength, pulse width, laser typeand cleanliness of optic)Transmission Curve - Fused SilicaPlease note that the optical transmission curves are approximations and should be used for reference only14Copyright ©www.torrscientific.co.ukSkip to Contents
Fused Silica Zero Length ViewportsCF-1KF-1ISO-1CF-2KF-2ISO-2CF-3Part NumberFlangeTypeA(mm)KF-3B(mm)C(mm)D(mm)DiagramISO-3FlangeMaterialWeld RingMaterialVPZ16Q NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16Q-LN NW16CF 34 15 1.5 12.7 CF-1 316LN KovarVPZ16Q-NM NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticVPZ16LAQ NW16CF 34 15.5 1.5 9 CF-1 304L KovarVPZ16LAQ-LN NW16CF 34 15.5 1.5 9 CF-1 316LN KovarKVPZ16Q KF16 25 15 1.5 15 KF-1 304L KovarKVPZ25Q KF25 40 20 2 18.5 KF-1 304L KovarVPZ38Q NW35CF 70 32 3 12.7 CF-1 304L KovarVPZ38LAQ NW35CF 70 38 3.5 12.7 CF-2 304L KovarVPZ38Q-LN NW35CF 70 32 3 12.7 CF-1 316LN KovarVPZ38QLA-LN NW35CF 70 38 3.5 12.7 CF-2 316LN KovarVPZ38Q-NM NW35CF 70 32 3 12.7 CF-1 316LN Non-MagneticKVPZ40/32Q KF40 55 32 3 12.7 KF-1 304L KovarKVPZ40Q KF40 55 38 3.5 18.5 KF-2 304L KovarKVPZ50Q KF50 75 38 3.5 15 KF-3 304L KovarISO63QVPZ ISO63 95 38 3.5 12 ISO-1 304L KovarVPZ64Q NW63CF 114 63 4.5 17.4 CF-1 304L KovarVPZ64Q-LN NW63CF 114 63 4.5 17.4 CF-1 316LN KovarVPZ64Q-NM NW63CF 114 63 4.5 17.4 CF-1 316LN Non-MagneticVPZ100Q NW100CF 152 89 6 19.9 CF-3 304L KovarVPZ100Q-LN NW100CF 152 89 6 19.9 CF-3 316LN KovarVPZ100Q-NM NW100CF 152 89 6 19.9 CF-3 316LN Non-MagneticISO100QVPZ ISO100 130 63 4.5 12 ISO-2 304L KovarVPZ150Q NW150CF 203 136 9.5 22.3 CF-3 304L KovarVPZ150Q-LN NW150CF 203 136 9.5 22.3 CF-3 316LN KovarVPZ150Q-NM NW150CF 203 136 9.5 22.3 CF-3 316LN Non-MagneticISO160QVPZ ISO160 180 89 6 12 ISO-3 304L KovarVPZ200Q NW200CF 254 136 9.5 24.5 CF-3 304L KovarFused Silica ZeroLength Viewportswww.torrscientific.co.uk 15Skip to ContentsCopyright ©
Page 2 and 3: Issue June 20212Copyright ©www.tor
Page 4 and 5: ContentsCompany Introduction ......
Page 6 and 7: 6www.torrscientific.co.ukSkip to Co
Page 8 and 9: FacilitiesFacilitiesAll brazed and
Page 10 and 11: Product IntroductionViewportsTorr S
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Page 16 and 17: Bonded Fused Silica Zero Length Vie
Page 18 and 19: Fused Silica Re-Entrant ViewportsSp
Page 20 and 21: Kodial Zero Length ViewportsSpecifi
Page 22 and 23: Kodial Zero Length Viewports with I
Page 24 and 25: Kodial Zero Length Viewportswith X-
Page 26 and 27: Kodial Zero Length Viewports withIT
Page 28 and 29: Non-Magnetic Kodial Zero Length Vie
Page 30 and 31: Kodial Re-Entrant ViewportsSpecific
Page 32 and 33: 200°C Sapphire Zero Length Viewpor
Page 34 and 35: High Temperature Sapphire Zero Leng
Page 36 and 37: Zinc Selenide Zero Length Viewports
Page 38 and 39: Magnesium Fluoride Zero Length View
Page 40 and 41: Calcium Fluoride Zero Length Viewpo
Page 42 and 43: Barium Fluoride Zero Length Viewpor
Page 44 and 45: CVD Diamond UHV ViewportsSpecificat
Page 46 and 47: Quartz Natural Z-Cut Zero Length Vi
Page 48 and 49: Differentially-pumped ViewportsSpec
Page 50 and 51: Fused Silica UHV Laser Viewportswit
Page 52 and 53: Fused Silica UHV Viewportswith Anti
Page 54 and 55: Fused Silica UHV Viewportswith Broa
Page 56 and 57: Fused Silica UHV Viewportswith ‘W
Page 58 and 59: Kodial Zero Length Viewportswith An
Page 60 and 61: Kodial Zero Length Viewportswith Br
Page 62 and 63: Kodial Zero Length Viewportswith
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Kodial Zero Length Viewportswith
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Sapphire viewports with Anti-Reflec
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Sapphire viewports withBroadband An
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Sapphire viewports with‘VAR’ An
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AR CoatedZinc Selenide ZeroLength V
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AR Coated Zinc Selenide Zero Length
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Glass to Metal SealsCF Tubulated Ko
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KF and ISO Centering RingsSpecifica
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CF Copper GasketsSpecificationMater
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Clamps and FastenersKF Swing Clamps
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Atom Trap ChambersSpecificationBody
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Viewport ShuttersFeaturesManual or
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OpticsFused SilicaFused Silica is a
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Attenuation Filter WheelsSpecificat
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CVD DiamondSpecificationTolerance o
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Ceramic BreaksSpecificationSeal Typ
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UHV CF RHEED ScreensCF ViewportCF V
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IndexPart NumberATC-10PC 89ATC-10PU
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IndexPart NumberKVPZ50QWAR 57KVPZ50
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IndexPart NumberVPZ150WAR-LN 65VPZ1
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118Copyright ©www.torrscientific.c
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Vacuum Optics Catalogue - June 2021

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