Vacuum Optics Catalogue - March 2022

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Fused Silica UHV Viewportswith Broadband Anti-Reflective CoatingsFused Silica UHVViewports with BroadbandAnti-ReflectiveCoatingsTorr Scientific fused silica viewports are offered with a four-layer broadband anti-reflective (BBAR)coating on both sides of the window optimised to a customer specified laser wavelength range.In many cases, the coating reduces reflection to below 0.5% per face or 1% total at the key wavelengthsspecified. Please advise the important wavelengths or wavelength range with your enquiryor order. Wavelength ranges between 240 nm and 1550 nm can be accepted as standard, althoughcoatings for other wavelength ranges can be quoted on request. Viewports with ‘V’ coatings for asingle wavelength for laser applications are also offered. The viewports comprise a high purity laserquality fused silica optic with precise flatness, parallelism, scratch and dig specifications. The ultrahigh vacuum (UHV) CF versions are offered using high grade 304L or 316LN stainless 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. 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. Non-standard viewports can bemanufactured on request, including re-entrant style microscope/camera viewports. Annealed coppergaskets and other component accessories are also supplied by TSL.Reflectance CurveSeal 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 yBraze200 °CFlatness <8λLaser DamageThresholdCoatingSpecificationminus 20 °C3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -11 mbar20/10 scratch/digCW Continuous Wave - 500 W/cm 2 at 530 nmPulsed 2 J/cm 2 at 530 nm and 10 ns pulse width(note, varies with wavelength, pulse width, laser typeand cleanliness of optic)4-layer BBAR coating optimised to customerspecified wavelength range between 240 nmand 1550 nmThe TSL UV-Vis SpectrophotometerPlease note that the optical reflectance curves are approximations and should be used for reference only54www.torrscientific.co.ukCopyright ©Skip to Contents
Fused Silica UHV Viewportswith Broadband Anti-Reflective CoatingsCF-1KF-1ISO-1CF-2KF-2ISO-2CF-3Part NumberFlangeTypeA(mm)KF-3B(mm)C(mm)D(mm)DiagramISO-3FlangeMaterialVPZ16QBBAR NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16QBBAR-LN NW16CF 34 15 1.5 12.7 CF-1 316LN KovarWeld RingMaterialVPZ16QBBAR-NM NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticVPZ16LAQBBAR NW16CF 34 15.5 1.5 9 CF-1 304L KovarVPZ16LAQBBAR-LN NW16CF 34 15.5 1.5 9 CF-1 316LN KovarKVPZ16QBBAR KF16 25 15 1.5 15 KF-1 304L KovarKVPZ25QBBAR KF25 40 20 2 18.5 KF-1 304L KovarVPZ38QBBAR NW35CF 70 32 3 12.7 CF-1 304L KovarVPZ38LAQBBAR NW35CF 70 38 3.5 12.7 CF-2 304L KovarVPZ38QBBAR-LN NW35CF 70 32 3 12.7 CF-1 316LN KovarVPZ38QLABBAR-LN NW35CF 70 38 3.5 12.7 CF-2 316LN KovarVPZ38QBBAR-NM NW35CF 70 32 3 12.7 CF-1 316LN Non-MagneticKVPZ40/32QBBAR KF40 55 32 3 12.7 KF-1 304L KovarKVPZ40QBBAR KF40 55 38 3.5 18.5 KF-2 304L KovarKVPZ50QBBAR KF50 75 38 3.5 15 KF-3 304L KovarISO63QVPZBBAR ISO63 95 38 3.5 12 ISO-1 304L KovarVPZ64QBBAR NW63CF 114 63 4.5 17.4 CF-1 304L KovarVPZ64QBBAR-LN NW63CF 114 63 4.5 17.4 CF-1 316LN KovarVPZ64QBBAR-NM NW63CF 114 63 4.5 17.4 CF-1 316LN Non-MagneticVPZ100QBBAR NW100CF 152 89 6 19.9 CF-3 304L KovarVPZ100QBBAR-LN NW100CF 152 89 6 19.9 CF-3 316LN KovarVPZ100QBBAR-NM NW100CF 152 89 6 19.9 CF-3 316LN Non-MagneticISO100QVPZBBAR ISO100 130 63 4.5 12 ISO-2 304L KovarVPZ150QBBAR NW150CF 203 136 9.5 22.3 CF-3 304L KovarVPZ150QBBAR-LN NW150CF 203 136 9.5 22.3 CF-3 316LN KovarVPZ150QBBAR-NM NW150CF 203 136 9.5 22.3 CF-3 316LN Non-MagneticISO160QVPZBBAR ISO160 180 89 6 12 ISO-3 304L KovarVPZ200QBBAR NW200CF 254 136 9.5 24.5 CF-3 304L Kovar* Note that the position of the optic in the VPZ38LAQ design results in the coating being effective over the central >30mm only.Please advise the laser wavelength with your enquiry or order. Wavelengths between 240nm and 1550nm canbe accepted as standard, although coatings for other wavelengths can be quoted on request.Fused Silica UHVViewports with BroadbandAnti-ReflectiveCoatingswww.torrscientific.co.uk 55Skip to ContentsCopyright ©
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Issue March 20222Copyright ©www.to
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 14 and 15: Fused Silica Zero Length ViewportsF
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 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 70 and 71: Sapphire viewports with‘VAR’ 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
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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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 - March 2022

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