The 20Q20XAR.18 High-Energy Laser Windows is specially designed to eliminate losses in vacuum cell applications and can be used as a vacuum window, convection barrier, or interferometer compensator plate. This 2 inch (50.8 mm) diameter optic is precision polished, select grade fused silica coated with hard refractory multilayers for very high damage threshold. A 30 arc min wedge between the polished faces eliminates fringe patterns and cavity feedback. Newport's AR.18 broadband IR antireflection coating is applied for a 1000 to 1550 nm wavelength range.

• 直径

  50.8 mm

• 材料

  UV Grade Fused Silica

• 增透膜

  1000-1550 nm

• 表面平面度

  λ/10 @ 632.8 nm

• 表面质量

  15-5 scratch-dig

• 厚度

  9.4 mm  

• 厚度公差

  ±0.38 mm

• 倒角

  0.38–1.14 mm face width

• 清洁

  See How to Clean Optics

• 通光孔径

  Central 80% of diameter

• 直径公差

  +0/-0.13 mm

• 镀膜代码

  AR.18

• 楔形

  30 ±15 arc min

• 损伤阈值

  10 J/cm2, 20 ns pulses, 20 Hz at 1064 nm

20 q20xar。18高能激光窗是专门为消除真空电池应用中的损耗而设计的，可以用作真空窗、对流屏障或干涉仪补偿板。这种2英寸(50.8 mm)直径的光学精密抛光，选用等级熔融二氧化硅涂层与硬质耐火层，以达到极高的损伤阈值。抛光表面之间30弧最小的楔形消除条纹图案和腔内反馈。Newport公司的AR.18宽频带红外抗反射涂层适用于1000 - 1550 nm波长范围。