|
Wollaston polarizer is made of two birefringent
material prisms that are cemented together. The deviations of the ordinary
and extraordinary beams are nearly symmetrical about the input beam axis,
so that Wollaston polarizing beam splitter has approximately twice the
deviation of the Rochon. The separation angle exhibits chromatic
dispersion, as shown in the blow. Any separation angle can be designed
upon the requirement. The separation angle of standard products versus
wavelength is shown in the plot below.
Separation Angular of Standard Products versus
Wavelength:
a-BBO, 190-3500nm
|
Calcite:350-2300nm
|
Quartz, 200-3300nm
|
YVO4, 400-4000nm
|
|
Main Specifications
|
| Material |
a-BBO,
Calcite, YVO4, Quartz |
| Wavelength
Range |
a-BBO:190-3500
nm,Calcite:350-2300 nm,YVO4:400-4000nm,Quartz:20-2300nm |
| Extinction
Ratio |
Calcite, Quartz:<5x10-5;
a-BBO, YVO4:<5x10-6 |
| Parallelism |
<1 arc Min |
| Surface
Quality |
20-10 |
| Beam
Deviation |
< 3 arc minutes |
| Wavefront
Distortion |
l/4@633nm |
| Damage
Threshold |
>500 MW/cm2 |
| Coating |
Single MgF2 |
| Mount |
Black Anodized Aluminum |
|
Standard Products
|
1.
a-BBO Wollaston Polarizer
|
|
Part No.
|
Extinction Ratio
|
Separation Angle(°)
|
C.A.
fa (mm)
|
O.D.
fd (mm)
|
L±0.1(mm)
|
|
|
<5x10-6
|
15-27
16°@800nm
|
6.0
|
15.0
|
14.0
|
|
WSP6008
|
8.0
|
25.4
|
16.0
|
|
WSP6010
|
10.0
|
25.4
|
18.0
|
|
WSP6015
|
15.0
|
30.0
|
23.0
|
|
WSP6020
|
20.0
|
38.0
|
28.0
|
|
|
2. Calcite Wollaston Polarizer
|
|
Part No.
|
Extinction Ratio
|
Separation Angle(°)
|
C.A.
fa (mm)
|
O.D.
fd (mm)
|
L±0.1(mm)
|
|
WSP-7006
|
<5x10-6
|
16.7-22.5
19°@980nm
|
6.0
|
15.0
|
14.0
|
|
WSP-7008
|
8.0
|
25.4
|
16.0
|
|
WSP-7010
|
10.0
|
25.4
|
18.0
|
|
WSP-7015
|
15.0
|
30.0
|
23.0
|
|
WSP-7020
|
20.0
|
38.0
|
28.0
|
|
|
3. Quartz Wollaston Polarizer
|
|
Part No.
|
Extinction Ratio
|
Separation Angle(°)
|
C.A.
fa (mm)
|
O.D.
fd (mm)
|
L±0.1(mm)
|
|
WSP-9006
|
<5x10-6
|
2-3
2°@1064nm
|
6.0
|
15.0
|
20.0
|
|
WSP-9008
|
8.0
|
25.4
|
24.0
|
|
WSP-9010
|
10.0
|
25.4
|
28.0
|
|
WSP-9015
|
15.0
|
30.0
|
38.0
|
|
WSP-9020
|
20.0
|
38.0
|
48.0
|
|
|
4. YVO4 Wollaston Polarizer
|
|
Part No.
|
Extinction Ratio
|
Separation Angle(°)
|
C.A.
fa (mm)
|
O.D.
fd (mm)
|
L±0.1(mm)
|
|
|
<5x10-6
|
19.6-23.3
20°@1550nm
|
6.0
|
15.0
|
14.0
|
|
|
8.0
|
25.4
|
16.0
|
|
|
10.0
|
25.4
|
16.0
|
|
|
15.0
|
30.0
|
20.0
|
|
|
20.0
|
38.0
|
258.0
|
|
|
