The UVBS12-2 UV Beamspliter is a 12.5 mm by 12.5 mm square, 2.0 mm thick UV Fused Silica beamsplitter with 30/70 reflection/transmission ratio optimized for 45° angle of incidence. This beamsplitter is designed for UV applications covering spectral range from 250 nm to 450 nm, featuring low absorption and excellent thermal stability. The back surface of the beamsplitter has a wedge that is less than 5 arc minutes to reduce undesired interference effects caused by the back reflections from both surfaces of the optics.

• 增透膜

  250-450 nm

• 材料

  UV Grade Fused Silica

• 表面质量

  60-40 scratch-dig

• 入射角

  45°±3°

• 后表面镀膜

  AR (Rave <1%, Ravg <2% over 250-450nm)

• 尺寸

  12.5 x 12.5 mm

• 表面平面度

  ≤1 λ at 632.8 nm over the clear aperture

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

• 通光孔径

  > central 85% of diameter

• 效率

  Ravg < 1%, Rabs < 2% @ 250-450 nm

• 厚度

  2.0 mm  

• 厚度公差

  +0.0/-0.2 mm

• 透射

  70%, independent of polarization

• 平行度

  < 5 arc minutes

UVBS12-2紫外线Beamspliter是12.5毫米,12.5毫米平方,2.0毫米厚紫外线石英分光镜反射30/70 / 45°角传动比优化的发病率。本波束分离器适用于光谱范围在250 ~ 450 nm之间的紫外应用，具有吸收率低、热稳定性好等特点。波束分离器的后表面有一个楔形，小于5弧分钟，以减少由两个光学表面的后反射引起的不必要的干涉效应。