Vacuum Optics Catalogue - March 2022

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Sapphire viewports with‘VAR’ Anti-Reflective CoatingsSpecificationSapphire viewportswith ‘VAR’ Anti-Reflective CoatingsSeal TypeMaximumTemperatureBrazeMinimum Temperature minus 20 °CMaximum Rate ofTemperature ChangeLeak RatePressure RangeSurface QualityFlatnessCoatingReflectance200 °C(KF & ISO versions 150 °C)3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -11 mbar60/40 scratch/dig< 8λ2-layer 'VAR' coating optimisedto customer specified wavelengthbetween 240 nm and 1550 nm< 0.5% per face 1% total at thespecified wavelengthTorr Scientific Sapphire viewports are offered with a two-layer ‘VAR’ anti-reflective coating on both sides ofthe window optimised to a customer specified wavelength. The coating reduces reflection to below 0.5% perface or 1% total at the wavelength specified. Please advise the laser wavelength with your enquiry or order.Wavelengths between 240 nm and 1550 nm can be accepted as standard, although coatings for other wavelengthscan be quoted on request. Viewports with coatings for a wavelength range can also be offered. TorrScientific sapphire viewports are offered in CF, ISO and KF flange styles. The viewports comprise a high qualityoptic with precise flatness, parallelism, scratch and dig specifications. The single crystal sapphire windowshave excellent optical, physical and chemical properties. The hardest of the oxide crystals, sapphire retains itshigh strength at high temperatures. Sapphire has a low coefficient of thermal expansion and low fluorescence,good resistance to thermal shock and scratching making this an excellent material for IR transmitting opticsand robust applications. C-cut sapphire is selected for Torr Scientific sapphire viewports to minimise the effectsof birefringence. 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 surface science applicationsneeding low magnetic fields. The non-magnetic viewports use a non-magnetic weld ring instead ofthe regular kovar weld ring. Flanges in 304L stainless steel are used for the high vacuum KF and ISO viewports.TSL viewports are manufactured in cleanroom conditions and helium leak tested, cleaned and packed to UHVstandards. The rugged construction of the sapphire viewports allows repeated bake-out to 200 °C with UHVperformance, whilst the window offers broadband optical transmission through vacuum UV, visible to nearinfra-red. Non-standard viewports can be manufactured on request, including re-entrant style microscope/camera viewports. Annealed copper gaskets and other component accessories are also supplied by TSL.Reflectance CurveThe TSL UV-Vis SpectrophotometerPlease note that the optical reflectance curves are approximations and should be used for reference only70Copyright ©www.torrscientific.co.ukSkip to Contents
Sapphire viewports with‘VAR’ Anti-Reflective CoatingsCF-1KF-1ISO-1CF-2KF-2ISO-2CF-3Part NumberFlangeTypeKF-3A(mm)B(mm)C(mm)D(mm)DiagramISO-3FlangeMaterialWeld RingMaterialVPZ16S-200-VAR NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16S-200-VAR-LN NW16CF 34 15 1.5 12.7 CF-1 316LN KovarVPZ16S-200-VAR-NM NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticKVPZ16S-200-VAR KF16 25 15 1.5 12.7 KF-1 304L KovarKVPZ25S-200-VAR KF25 40 20 1.5 18.5 KF-2 304L KovarVPZ23S-200-VAR NW35CF 70 23 1.5 12.7 CF-1 304L KovarVPZ38S-200-VAR NW35CF 70 32 1.5 12.7 CF-3 304L KovarVPZ38LAS-200-VAR NW35CF 70 38 1.5 12.7 CF-2 304L KovarVPZ38S-200-VAR-LN NW35CF 70 32 1.5 12.7 CF-1 316LN KovarVPZ38LAS-200-VAR-LN NW35CF 70 38 1.5 12.7 CF-2 316LN KovarVPZ38S-200-VAR-NM NW35CF 70 32 1.5 12.7 CF-1 316LN Non-MagneticKVPZ40/32S-200-VAR KF40 55 32 1.5 12.7 KF-1 304L KovarKVPZ40S-200-VAR KF40 55 38 1.5 18.5 KF-3 304L KovarKVPZ50S-200-VAR KF50 75 38 1.5 15 KF-3 304L KovarVPZ64S-200-VAR NW63CF 114 63 2 17.4 CF-1 304L KovarVPZ64S-200-VAR-LN NW63CF 114 63 2 17.4 CF-1 316LN KovarVPZ64S-200-VAR-NM NW63CF 114 63 2 17.4 CF-1 316LN Non-MagneticISO63SVPZ-200-VAR ISO63 95 38 1.5 12 ISO-1 304L KovarVPZ100S-200-VAR NW100CF 152 89 2.5 19.9 CF-3 304L KovarVPZ100S-200-VAR-LN NW100CF 152 89 2.5 19.9 CF-3 316LN KovarVPZ100S-200-VAR-NM NW100CF 152 89 2.5 19.9 CF-3 316LN Non-MagneticISO100SVPZ-200-VAR ISO100 130 63 2 12 ISO-2 304L KovarVPZ150S-200-VAR NW150CF 203 136 4 22.3 CF-3 304L KovarVPZ150S-200-VAR-LN NW150CF 203 136 4 22.3 CF-3 316LN KovarVPZ150S-200-VAR-NM NW150CF 203 136 4 22.3 CF-3 316LN Non-MagneticISO160SVPZ-200-VAR ISO160 180 89 2.5 12 ISO-3 304L KovarVPZ200S-200-VAR NW200CF 254 136 4 24.5 CF-3 304L KovarSapphire viewportswith ‘VAR’ Anti-Reflective Coatingswww.torrscientific.co.uk 71Skip to ContentsCopyright ©
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Issue March 20222Copyright ©www.to
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ContentsCompany Introduction ......
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Page 8 and 9:
FacilitiesFacilitiesAll brazed and
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Product IntroductionViewportsTorr S
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Page 14 and 15:
Fused Silica Zero Length ViewportsF
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Bonded Fused Silica Zero Length Vie
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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
Page 64 and 65: Kodial Zero Length Viewportswith
Page 66 and 67: Sapphire viewports with Anti-Reflec
Page 68 and 69: Sapphire viewports withBroadband An
Page 72 and 73: AR CoatedZinc Selenide ZeroLength V
Page 74 and 75: AR Coated Zinc Selenide Zero Length
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Page 78 and 79: Glass to Metal SealsCF Tubulated Ko
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Page 82 and 83: KF and ISO Centering RingsSpecifica
Page 84 and 85: CF Copper GasketsSpecificationMater
Page 86 and 87: Clamps and FastenersKF Swing Clamps
Page 88 and 89: Atom Trap ChambersSpecificationBody
Page 90 and 91: Viewport ShuttersFeaturesManual or
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Page 96 and 97: OpticsFused SilicaFused Silica is a
Page 98 and 99: Attenuation Filter WheelsSpecificat
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Page 102 and 103: CVD DiamondSpecificationTolerance o
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Page 106 and 107: Ceramic BreaksSpecificationSeal Typ
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Page 110 and 111: UHV CF RHEED ScreensCF ViewportCF V
Page 112 and 113: IndexPart NumberATC-10PC 89ATC-10PU
Page 114 and 115: IndexPart NumberKVPZ50QWAR 57KVPZ50
Page 116 and 117: IndexPart NumberVPZ150WAR-LN 65VPZ1
Page 118 and 119: 118Copyright ©www.torrscientific.c
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Vacuum Optics Catalogue - March 2022

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