Windows
 

ZnSe windows can be fabricated in dimensions from 4.0mm to 300mm diameter, and in thicknesses from 1.0mm up to 50mm. The windows are AR coated at 10.6um. Many standard sizes are manufactured and held in stock.

  • Hi-tech manufacturing methods

  • Latest ultra-low absorption coatings

  • High quality laser grade material

The following standard windows are available.

 

Model

Material

Diameter

mm

ET

mm

Incidence

deg

T

%

R

%

Coating

WZ4920

ZnSe

12.5

2

0

99.4

0.1

AR/AR

WZ5030

ZnSe

12.7

3

0

99.4

0.1

AR/AR

WZ5910

ZnSe

15

1

0

99.4

0.1

AR/AR

WZ5960U

ZnSe

15

6

0

71

14.5

Uncoated ZnSe

WZ6330

ZnSe

16

3

0

99.4

0.1

AR/AR

WZ1020

ZnSe

25.4

2

0

99.4

0.1

AR/AR

WZ1030

ZnSe

25.4

3

0

99.4

0.1

AR/AR

WZ1030U

ZnSe

25.4

3

0

71

14.5

Uncoated ZnSe

WZ1040

ZnSe

25.4

4

0

99.4

0.1

AR/AR

WZ1130

ZnSe

28

3

0

99.4

0.1

AR/AR

WZ1140

ZnSe

28

4

0

99.4

0.1

AR/AR

WZ1150

ZnSe

28

5

0

99.4

0.1

AR/AR

WZ11830U

ZnSe

30

3

0

71

14.5

Uncoated ZnSe

WZ1530

ZnSe

38.05

3

0

99.4

0.1

AR/AR

WZ1530P

ZnSe

38.05

3

0

99.4

0.1

AR/AR

WZ1540

ZnSe

38.05

4

0

99.4

0.1

AR/AR

WZ1550

ZnSe

38.05

5

0

99.4

0.1

AR/AR

WZ1560

ZnSe

38.05

6

0

99.4

0.1

AR/AR

WZ17580

ZnSe

44.5

8

0

99.4

0.1

AR/AR

WZ19730

ZnSe

50

3

0

99.4

0.1

AR/AR

WZ19740

ZnSe

50

4

0

99.4

0.1

AR/AR

WZ19750

ZnSe

50

5

0

99.4

0.1

AR/AR

WZ1975099

ZnSe

50

5

0

1

99

AR/99%

WZ2030U

ZnSe

50.8

3

0

71

14.5

Uncoated ZnSe

WZ2040

ZnSe

50.8

4

0

99.4

0.1

AR/AR

WZ2050

ZnSe

50.8

5

0

99.4

0.1

AR/AR

WZ2050U

ZnSe

50.8

5

0

71

14.5

Uncoated ZnSe

WZ2060

ZnSe

50.8

6

0

99.4

0.1

AR/AR

WZ2530

ZnSe

63.5

3

0

99.4

0.1

AR/AR

WZ3030

ZnSe

76.2

3

0

99.4

0.1

AR/AR
 

Brewster Windows
 

Brewster windows operate at an angle of incidence equal to the 'Brewster angle' which is 67.4 for ZnSe at 10.6mm. In order to present a square profile to the incident beam, they are about 2.5 times longer than their width. They fully transmit linearly polarized light in the P-plane and reflect about 50% of the S-plane component. Consequently, they can be used to enhance ('clean-up') the polarization or by rotating it about the beam axis, they can be used as an attenuator. Coated versions enhance the reflectance of the S-component but at the expense of restricting the power. Usually, Brewster windows are used in pairs.

 

l   Wedged to between 1 and 3 arcminutes in order to overcome multiple interference

l   Coated or uncoated versions and many sizes available

l   High quality laser grade material

 

The following standard Brewster windows are available.

 

Model

Material

Diameter

mm

ET

mm

Incidence

deg

T

%

R

%

Coating

BWZ2510

ZnSe

25

3

0

71

14.5

Uncoated ZnSe

BWZ3315

ZnSe

33

3

0

71

14.5

Uncoated ZnSe

BWZE4015

ZnSe

40

3

67.4

98% P-Pol

99.5S-Pol

AR/U-EB

BWZ4218

ZnSe

42

3

0

71

14.5

Uncoated ZnSe

BWZ5018

ZnSe

50

3

0

71

14.5

Uncoated ZnSe

BWZE5018

ZnSe

50

3

67.4

98% P-Pol

99.5S-Pol

AR/U-EB

BWZ5320

ZnSe

53

3

0

71

14.5

Uncoated ZnSe

BWZ6122

ZnSe

61

3

0

71

14.5

Uncoated ZnSe

BWZ6323

ZnSe

63

3

0

71

14.5

Uncoated ZnSe

BWZ6625

ZnSe

66

3

0

71

14.5

Uncoated ZnSe

BWZE6625

ZnSe

66

3

67.4

98% P-Pol

99.5S-Pol

AR/U-EB

BWZ10038

ZnSe

100

3

0

71

14.5

Uncoated ZnSe

BWZ11542

ZnSe

115

3

0

71

14.5

Uncoated ZnSe

BWZ13248

ZnSe

132

3

0

71

14.5

Uncoated ZnSe
 
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