The 900PH-25 High Energy Pinhole Aperture is fabricated from ultra-thin molybdenum, a refractory alloy with high heat conductivity and melting point. This material exhibits almost no warping due to localized heating by the laser. A smooth 25 ± 2.5 μm diameter hole with extremely low ellipticity is produced using laser drilling techniques. These pinholes have a laser damage threshold of 75 MW/cm2 CW and are suitable for pulsed laser use up to 700 mJ/cm2. This version is mounted for use with our Model 900 spatial filter.

• 类型

  High Energy Pinhole

• 安装

  Model 900 Spatial Filter

• 孔径

  25 ±2.5 µm

• 材料

  Molybdenum

• 直径

  9.525 mm  

• 直径公差

  ±0.125 mm

• 损伤阈值

  75 MW/cm2 CW, 700 mJ/cm2 with 10 nsec pulses, typical

• 数值孔径

  25 ±2.5

• 厚度

  15.24 µm  

• 
  

900PH-25高能针孔孔径由超薄钼制成，钼是一种高导热性和熔点的难熔合金。由于激光局部加热，这种材料几乎不会翘曲。顺利25±2.5μm直径孔与使用激光钻井技术产生椭圆率极低。这些针孔的激光损伤阈值为75 MW/cm2连续波，适用于高达700 mJ/cm2的脉冲激光。这个版本安装在我们的900型空间过滤器上。