VUV-UV Grade Windows


Vacuum Ultraviolet (VUV-UV) Optical Windows
are available from select VUV Grade Magnesium Fluoride (MgF2), Calcium Fluoride (CaF2) and Crystalline Quartz materials.

Magnesium Fluoride:  VUV Grade Magnesium Fluoride (MgF2) exhibits high transmission properties from ~ 110nm Vacuum UV (VUV) to ~ 6.0um in the Infrared.  MgF2 is a relatively hard crystalline material resistant to mechanical and thermal shock.  MgF2 is a birefringent crystal typically oriented along the optical axis to avoid birefringent effects in windows & lenses. 

Calcium Fluoride:  Calcium Fluoride (CaF2) exhibits good transmission properties from ~ 140nm Vacuum UV (VUV) to ~ 8.0um in the Infrared.  CaF2 is a relatively soft crystalline material and care should be taken as CaF2 is sensitive to mechanical and thermal shock.  CaF2 is a cubic single crystal optical material.


Crystalline Quartz: 
Crystal Quartz exhibits good transmission properties from ~ 147nm Vacuum UV (VUV) to ~ 2.5um in the Infrared.  Crystal Quartz is a very hard crystalline material with low thermal expansion coefficient.  Crystal Quartz is a grown crystalline form of Silicon Dioxide (SiO2) optical material.

VUV-UV Optical Windows are flat polished round VUV-UV windows typically used in general VUV-UV applications such as Deuterium (D2) Lamp and VUV-UV Laser Sources to isolate environments while allowing short wavelength VUV-UV light to transmit as short as 120nm.   VUV-UV Optical Windows are generally used for view ports or sealing and or protecting other components within an VUV-UV optical assembly, VUV-UV instrument or VUV-UV laser.

For more information about Optical Windows, refer to our Optics Tutorial page

 

OPTICAL WINDOW SPECIFICATIONS

Material : VUV Grade MgF2, CaF2 & Crystal Quartz     

Diameter (Dia = Ø) Tolerance: ± 0.25mm

Thickness Tolerance: ± 0.25mm  

Transmitted Wavefront:  ~L/4 @ 633 nm nominal

Surface Finish:  20-10 to 40-20 both surfaces

                        Clear aperture: central 80%

Parallelism:  < = 5 arc minutes 

Chamfer: ~ 0.30mm @ 45 deg. typical


All dimensions in mm  

                                                      

 

 

 

 

 


 

 

 

DIA Ø

THICK (T)

DESCRIPTION

MATERIAL

PRODUCT #

PRICE

ORDER

12.7

6.35

VUV-UV MgF2 Window

VUV MgF2

AQMF1264OW

$265.00

AQMF1264OW

12.7

6.35

VUV-UV CaF2 Window

VUV CaF2

AQCF1264OW

$260.00

AQCF1264OW

12.7

2.0

VUV-UV CQ Window

Crystal Quartz

AQCQ1220OW

$355.00

AQCQ1220OW

25.4

6.35

VUV-UV MgF2 Window

VUV MgF2

AQMF2564OW

$365.00

AQMF2564OW

25.4

6.35

VUV-UV CaF2 Window

VUV CaF2

AQCF2564OW

$355.00

AQCF2564OW

25.4

2.5

VUV-UV CQ Window

Crystal Quartz

AQCQ2525OW

$405.00

AQCQ2525OW

36.0

5.0

VUV-UV MgF2 Window

VUV MgF2

AQMF3650OW

$440.00

AQMF3650OW

36.0

5.0

VUV-UV CaF2 Window

VUV CaF2

AQCF3650OW

$430.00

AQCF3650OW

38.1

5.0

VUV-UV MgF2 Window

VUV MgF2

AQMF3850OW

$460.00

AQMF3850OW

38.1

5.0

VUV-UV CaF2 Window

VUV CaF2

AQCF3850OW

$445.00

AQCF3850OW

38.1

5.0

VUV-UV CQ Window

Crystal Quartz

AQCQ3850OW

$850.00

AQCQ3850OW

50.8

5.0

VUV-UV MgF2 Window

VUV MgF2

AQMF5050OW

$565.00

AQMF5050OW

50.8

5.0

VUV-UV CaF2 Window

VUV CaF2

AQCF5050OW

$545.00

AQCF5050OW

50.8

9.52

VUV-UV MgF2 Window

VUV MgF2

AQMF5095OW

$675.00

AQMF5095OW

50.8

9.52

VUV-UV CaF2 Window

VUV CaF2

AQCF5095OW

$650.00

AQCF5095OW

 



                    CaF2 Refractive Index                                       MgF2 Refractive Index 

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.500 1.492 1.469 1.460 1.445

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.464 1.428 1.415 1.405 1.387
   

 

  

                     Crystalline Quartz  

  

           Crystal Quartz Refractive Index

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.660 1.562 1.508 1.486 1.476

 

 

 

 

            **Also see our UV Fused Silica & BK7 Glass Circular Optical Windows

 

           

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