VUV-UV Grade Optical Windows


Vacuum Ultraviolet (VUV-UV) Optical Windows are available from select VUV Grade Magnesium Fluoride (MgF2); Calcium Fluoride (CaF2) & Sapphire.

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 optical windows & lenses.  MgF2 Axis Orientation is within +/- 5 degrees. 

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.

Sapphire:  Sapphire (Al2O3) exhibits good transmission range extending from the ~ 150nm Vacuum UV (VUV) to ~ 5.0um in the Infrared.  Sapphire is an exceptional hard material and can only be scratched by a few materials other than itself.  Sapphire is chemically inert and insoluble to water, common acids, or alkalis at temperatures up to ~1,000 °C. Sapphire is typically oriented so that the c-axis of the crystal is parallel with the optical axis.

 

                                   

 

OPTICAL WINDOW SPECIFICATIONS
 

Material: VUV Grade MgF2, CaF2 & Sapphire

Diameter (Dia = Ø) Tolerance: ± 0.25mm

Thickness Tolerance: ± 0.30mm  

Transmitted Wavefront:  ~L/4 - L/2 @ 633 nm nominal

Sapphire: ~ 1 wave @ 633 nm nominal

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

Sapphire: 60-40 to 80-50 both surfaces
Clear Aperture: central 80%

Parallelism:  < = 5 arc minutes 

Chamfer: ~ 0.30mm @ 45 deg. typical
MgF2 Axis Orientation: +/- 1-2 Degrees typical

(All dimensions in mm)  

                    

 

 

DIAMETER Ø

THICK (T)

             DESCRIPTION

 MATERIAL

 PRODUCT #

 PRICE

ORDER

10.0mm 1.5mm VUV-UV MgF2 Optical Window VUV MgF2 AQMF1015OW $245.00 AQMF1015OW
10.0mm 1.5mm VUV-UV CaF2 Optical Window UV CaF2 AQCF1015OW $205.00 AQCF1015OW
10.0mm 1.0mm VUV-UV Sapphire Optical Window Sapphire AQSP1010OW $215.00 AQSP1010OW

12.5mm

2.0mm

VUV-UV MgF2 Optical Window

VUV MgF2

AQMF1220OW

$290.00

AQMF1220OW

12.5mm

2.0mm

VUV-UV CaF2 Optical Window

UV CaF2 

AQCF1220OW

$210.00

AQCF1220OW

12.7mm

3.0mm

VUV-UV MgF2 Optical Window

VUV MgF2

AQMF1230OW

$290.00

AQMF1230OW

12.7mm

3.0mm

VUV-UV CaF2 Optical Window

UV CaF2  

AQCF1230OW

$225.00

AQCF1230OW

12.7mm 3.0mm VUV-UV Sapphire Optical Window Sapphire AQSP1230OW $125.00 AQSP1230OW

25.0mm

3.0mm

VUV-UV CaF2 Optical Window

UV CaF2

AQCF2530OW

$295.00

AQCF2530OW

25.0mm

3.0mm

VUV-UV MgF2 Optical Window

VUV MgF2

AQMF2530OW

$395.00

AQMF2530OW

25.4mm

5.0mm

VUV-UV MgF2 Optical Window

VUV MgF2

AQMF2550OW

$395.00

AQMF2550OW

25.4mm

5.0mm

VUV-UV CaF2 Optical Window

UV CaF2

AQCF2550OW

$285.00

AQCF2550OW

25.4mm 5.0mm VUV-UV Sapphire Optical Window Sapphire AQSP2550OW $175.00

AQSP2550OW

25.4mm

2.0mm

VUV-UV CaF2 Optical Window

UV CaF2

AQCF2520OW

$390.00

AQCF2520OW

40.0mm

3.0mm

VUV-UV CaF2 Optical Window

UV CaF2

AQCF4030OW

$475.00

AQCF4030OW

50.0mm

3.0mm

VUV-UV MgF2 Optical Window 

VUV MgF2

AQMF5030OW

$825.00

AQMF5030OW

50.0mm

3.0mm

VUV-UV CaF2 Optical Window

UV CaF2

AQCF5030OW

$495.00

AQCF5030OW

50.8mm 3.15mm VUV-UV Sapphire Optical Window Sapphire AQSP5031OW $450.00 AQSP5031OW
75.0mm 5.0mm VUV-UV CaF2 Optical Window UV CaF2 AQCF7550OW $850.00 AQCF7550OW
75.0mm 2.0mm VUV-UV Sapphire Optical Window Sapphire AQSP7520OW $925.00 AQSP7520OW

 

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


VUV-UV Optical Windows are flat polished round VUV-UV optical 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.

 

More information can be found on our Material Properties Page.   For more information about Optical Windows, refer to our Optics Tutorial page            


 

 

                                                          CaF2 Refractive Index                                      

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.559 1.501 1.468 1.453 1.445

 

 

 

 

 

                                                           

                           MgF2 Refractive Index ( (o) & (e) avg. )

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.464 1.428 1.4097 1.398 1.393

   

 

 

                          



 

                          Sapphire (Al2O3) Refractive Index ( (0) & (e) avg.)

Wavelength, nm 200 248 280 313 365
Refractive Index (n) 1.907 1.842 1.820 1.805 1.789

            

 

 

 
(Material transmittance can vary slightly and this data should be used as a reference only.  Based on 2-3mm Thick.) 
 
 
-- eSource Optics also offers an Excess Inventory of custom Thickness Optical Windows....
 
 

Please visit our "Windows Sale" Link.

            

 

           

                                                                        Back to Products

 

 

                                          

                     

 

 

 

 

 



                   

                                                

                                                   
              eSource Optics / PMB 126 / 1225 Providence Rd. / Whitinsville, MA 01588

 VUV-UV Optical Filters & Mirrors/Windows/Lenses/Hardwood Optics Cases & Boxes