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Wollaston Polarisator bietet den weitesten Abweichungs Winkel von Strahl Verdrängungs Polarisatoren. Dieser Polarisator besteht aus zwei birefringenten Prismen, die zusammen zementiert sind. Beide Ausgangs Strahlen werden symmetrisch von der Eingangs Strahlachse abgewichen. Da die Ausgangs Abweichungen chromatisch sind, wurden Wollaston-Polarisatoren sowohl in Spektrometern als auch in Polarisations Analysatoren eingesetzt.
Wollaston polarizer Specifications:
|
Material |
a-BBO, Calcite, YVO4 |
|
Wavelength Range |
a-BBO: 200-3500nm; Calcite: 350-2300nm; YVO4: 500-4000nm |
|
Extinction Ratio |
Calcite:<5x10-5 ; a -BBO:<5x10-6 ; YVO4:<5x10-6 ; Quartz:<5x10-5 |
|
Surface Quality |
20/10 scratch/dig |
|
Beam Deviation |
< 3 arc minutes |
|
Wavefront Distortion |
λ/4@632.8nm |
|
Damage Threshold |
>500MW/cm2 |
|
Coating |
Single Layer MgF2 |
|
Mount |
Black Anodized Aluminium |
1. a-BBO Wollaston Polarizer
|
Part No. |
Aperture φa (mm) |
O.D. φd(mm) |
L (mm) |
Wavelength Range |
Extinction Ratio |
Separation Angle |
|
WSB06 |
6.0 |
15.0 |
15.0 |
190-3500nm |
<5x10-6 |
15°- 17 °, 16°@800nm |
|
WSB08 |
8.0 |
25.4 |
17.0 |
|||
|
WSB10 |
10.0 |
25.4 |
19.0 |
|||
|
WSB15 |
15.0 |
30.0 |
23.0 |
|||
|
WSB20 |
20.0 |
38.0 |
29.0 |
2. Calcite Wollaston Polarizer
|
Part No. |
Aperture φa (mm) |
O.D. φd(mm) |
L (mm) |
Wavelength Range |
Extinction Ratio |
Separation Angle |
|
WSC06 |
6.0 |
15.0 |
15.0 |
350-2300nm |
<5x10-5 |
16.7°- 22.5 °, 19°@980nm |
|
WSC08 |
8.0 |
25.4 |
17.0 |
|||
|
WSC10 |
10.0 |
25.4 |
19.0 |
|||
|
WSC15 |
15.0 |
30.0 |
23.0 |
|||
|
WSC20 |
20.0 |
38.0 |
29.0 |
3. YVO4 Wollaston Polarizer
|
Part No. |
Aperture φa (mm) |
O.D. φd(mm) |
L (mm) |
Wavelength Range |
Extinction Ratio |
Separation Angle |
|
WSY06 |
6 |
15 |
15 |
500-4000nm |
<5x10-6 |
19.6°-23.3°, 20°@1550nm |
|
WSY08 |
8 |
25.4 |
17 |
|||
|
WSY10 |
10 |
25.4 |
19 |
|||
|
WSY15 |
15 |
30 |
23 |
|||
|
WSY20 |
20 |
38 |
29 |
4. Quartz Wollaston Polarizer
|
Part No. |
Aperture φa (mm) |
O.D. φd(mm) |
L (mm) |
Wavelength Range |
Extinction Ratio |
Separation Angle |
|
WSQ06 |
6.0 |
15.0 |
20.0 |
200-2300nm |
<5x10-5 |
2°-3 °, |
|
WSQ08 |
8.0 |
25.4 |
24.0 |
|||
|
WSQ10 |
10.0 |
25.4 |
28.0 |
|||
|
WSQ15 |
15.0 |
30.0 |
38.0 |
|||
|
WSQ20 |
20.0 |
38.0 |
48.0 |
|
Birefringent Crystal Material Data |
a-BBO Crystal│YVO4 Crystal│Calcite Crystal│Quartz Crystal│MgF2 Crystal