The 20Z40DM.11 Laser Line Dielectric mirror is a highly efficient reflector optimized for the 532 nm wavelength. This 2 inch (50.8 mm) diameter mirror is made from a 12.7 mm thick Zerodur substrate. Zerodur is a glass-ceramic material where thermal expansion is nominally zero. This extra stability can be critical for applications requiring diffraction limited performance. The DM.11 coating is designed for use with low-power Nd:YAG lasers and has a center wavelength of 532 nm. The coating achieves greater than 99% reflectance, from 0–45° angle of incidence, for any polarization. This multilayer dielectric coating is extremely durable, making it resistant to damage from repeated cleaning. This mirror has a λ/20 surface flatness and a 10-2 surface quality.

• 波长区域

  VIS

• 波长范围

  532 nm

• 镜片形状

  Round

• 直径

  50.8 mm  

• 材料

  Zerodur®

• 镀膜类型

  Laser Line Dielectric

• 镀膜代码

  DM.11

• 表面质量

  10-2 scratch-dig

• 表面平面度

  λ/20 at 632.8 nm

• 基板编号

  20Z40

• 入射角

  0-45°

• 通光孔径

  ≥central 80% of diameter

• S2 表面

  Ground

• 反射率

  Rs, Rp>99% @ 532 nm

• 厚度

  12.7 mm  

• 厚度公差

  ±0.25 mm

• 直径公差

  +0/-0.13 mm

• 倒角

  0.38–1.14 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

• 损伤阈值

  500 W/cm2 CW, 2 J/cm2 for 10 nsec pulses

20 z40dm。11 .激光线介质镜是针对532 nm波长优化的高效反射镜。这面直径2英寸(50.8毫米)的镜子是由12.7毫米厚的零调衬底制成的。零是一种热膨胀名义上为零的微晶玻璃材料。对于需要衍射限制性能的应用程序，这种额外的稳定性是至关重要的。DM.11涂层用于低功率Nd:YAG激光器，中心波长为532 nm。反射涂层达到大于99%,从0-45°入射角,极化。这种多层介质涂层非常耐用，可以防止反复清洗造成的损坏。这个镜子λ/ 10 20表面平面度和表面质量。