Vacuum Optics Catalogue - March 2022

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Fused Silica UHV Laser Viewportswith ‘VAR’ Anti-Reflective CoatingsSpecificationFused Silica UHVLaser Viewports with‘VAR’ Anti-ReflectiveCoatings* (note, varies with wavelength, pulse width, laser type andcleanliness of optic)Seal 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 yFlatnessLaser DamageThreshold *CoatingReflectanceTorr Scientific laser viewports are offered with a two-layer ‘VAR’ anti-reflective coating on both sidesof the window optimised to a customer specified laser wavelength. The coating reduces reflectionto below 0.5% per face or 1% total at the wavelength specified. Please advise the laser wavelengthwith your enquiry or order. Wavelengths between 240 nm and 1550 nm can be accepted as standard,although coatings for other wavelengths can be quoted on request. Viewports with coatingsfor a wavelength range can also be offered. The viewports comprise a high purity laser quality fusedsilica optic with precise flatness, parallelism, scratch and dig specifications. The ultra high vacuum(UHV) CF versions are offered using high grade 304L or 316LN stainless steel flanges. Non-magneticviewports are offered for low energy applications or surface science applications needing lowmagnetic fields. The non-magnetic viewports use a non-magnetic weld ring instead of the regularkovar weld ring. TSL viewports are manufactured in clean room conditions and helium leak tested,cleaned and packed to UHV standards. The rugged construction of the fused silica viewports allowsrepeated bake-out with UHV performance, whilst the window offers broadband optical transmissionthrough deep UV, visible to near infra-red. Non-standard viewports can be manufactured onrequest, including re-entrant style microscope/camera viewports. Annealed copper gaskets andother component accessories are also supplied by TSL.Braze200 °Cminus 20 °C3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -11 mbar20/10 scratch/dig< 8λCW Continuous Wave - 500 W/cm 2 at 530nm Pulsed2 J/cm 2 at 530 nm and 10 ns pulse width2-layer 'VAR' coating optimised to customer specifiedwavelength between 240 nm and 1550 nm< 0.5% per face 1% total at the specified wavelengthReflectance CurveThe TSL UV-Vis SpectrophotometerPlease note that the optical reflectance curves are approximations and should be used for reference only50Copyright ©www.torrscientific.co.ukSkip to Contents
Fused Silica UHV Laser Viewportswith ‘VAR’ Anti-Reflective CoatingsCF-1KF-1ISO-1CF-2KF-2ISO-2CF-3Part NumberFlangeTypeA(mm)KF-3B(mm)C(mm)D(mm)DiagramISO-3FlangeMaterialVPZ16QVAR NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16QVAR-LN NW16CF 34 15 1.5 12.7 CF-1 316LN KovarWeld RingMaterialVPZ16QVAR-NM NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticVPZ16LAQVAR NW16CF 34 15.5 1.5 9 CF-1 304L KovarVPZ16LAQVAR-LN NW16CF 34 15.5 1.5 9 CF-1 316LN KovarKVPZ16QVAR KF16 25 15 1.5 15 KF-1 304L KovarKVPZ25QVAR KF25 40 20 2 18.5 KF-1 304L KovarVPZ38QVAR NW35CF 70 32 3 12.7 CF-1 304L KovarVPZ38LAQVAR NW35CF 70 38 3.5 12.7 CF-2 304L KovarVPZ38QVAR-LN NW35CF 70 32 3 12.7 CF-1 316LN KovarVPZ38QLAVAR-LN NW35CF 70 38 3.5 12.7 CF-2 316LN KovarVPZ38QVAR-NM NW35CF 70 32 3 12.7 CF-1 316LN Non-MagneticKVPZ40/32QVAR KF40 55 32 3 12.7 KF-1 304L KovarKVPZ40QVAR KF40 55 38 3.5 18.5 KF-2 304L KovarKVPZ50QVAR KF50 75 38 3.5 15 KF-3 304L KovarISO63QVPZVAR ISO63 95 38 3.5 12 ISO-1 304L KovarVPZ64QVAR NW63CF 114 63 4.5 17.4 CF-1 304L KovarVPZ64QVAR-LN NW63CF 114 63 4.5 17.4 CF-1 316LN KovarVPZ64QVAR-NM NW63CF 114 63 4.5 17.4 CF-1 316LN Non-MagneticVPZ100QVAR NW100CF 152 89 6 19.9 CF-3 304L KovarVPZ100QVAR-LN NW100CF 152 89 6 19.9 CF-3 316LN KovarVPZ100QVAR-NM NW100CF 152 89 6 19.9 CF-3 316LN Non-MagneticISO100QVPZVAR ISO100 130 63 4.5 12 ISO-2 304L KovarVPZ150QVAR NW150CF 203 136 9.5 22.3 CF-3 304L KovarVPZ150QVAR-LN NW150CF 203 136 9.5 22.3 CF-3 316LN KovarVPZ150QVAR-NM NW150CF 203 136 9.5 22.3 CF-3 316LN Non-MagneticISO160QVPZVAR ISO160 180 89 6 12 ISO-3 304L KovarVPZ200QVAR NW200CF 254 136 9.5 24.5 CF-3 304L KovarFused Silica UHVLaser Viewports with‘VAR’ Anti-ReflectiveCoatings* 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.www.torrscientific.co.uk 51Skip to ContentsCopyright ©
Page 2 and 3: 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
Page 12 and 13: 12www.torrscientific.co.ukSkip to C
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 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 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
Page 76 and 77: 76Copyright ©www.torrscientific.co
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
Page 112 and 113:
IndexPart NumberATC-10PC 89ATC-10PU
Page 114 and 115:
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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