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渥拉斯顿偏振器是两光束分开角度最大的一种偏振器. 该偏振器是由两个双折射晶体棱镜胶合在一起. 两个输出光束以入射光束为中心轴对称分布. 由于输出光束的分开角度与波长相关, 渥拉斯顿偏振器可应用于光谱仪以及偏振分析仪.
渥拉斯顿偏振器规格:
|
材料 |
a-BBO, Calcite, YVO4 |
|
波长范围 |
a-BBO: 200-3500nm; Calcite: 350-2300nm; YVO4: 500-4000nm |
|
消光比 |
Calcite:<5x10-5 ; a -BBO:<5x10-6 ; YVO4:<5x10-6 ; Quartz:<5x10-5 |
|
表面质量 |
20/10 scratch/dig |
|
光束偏移 |
< 3 arc minutes |
|
波前畸变 |
λ/4@632.8nm |
|
损伤阈值 |
>500MW/cm2 |
|
镀膜 |
Single Layer MgF2 |
|
外壳 |
Black Anodized Aluminium |
1. a-BBO渥拉斯顿偏振器
|
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渥拉斯顿偏振器
|
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渥拉斯顿偏振器
|
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渥拉斯顿偏振器
|
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 |
|
双折射晶体材料特性 |
a-BBO Crystal│YVO4 Crystal│Calcite Crystal│Quartz Crystal│MgF2 Crystal