Germanium(Ge) Window

您在这里：
  1. 首页
  2. Products
  3. Infrared Window
  4. Germanium(Ge) Window

Germanium(Ge) Window

Rugged Germanium (Ge) Windows: High-Transmission Infrared Optics

Thermal imaging and mid-infrared systems demand optics that can survive harsh realities. ATR Crystal engineers premium Germanium (Ge) windows designed explicitly for extreme durability and uncompromising IR transmission. By applying highly specialized anti-reflection coatings, we completely neutralize Germanium’s naturally high refractive index, delivering peak optical clarity for the world’s most rigorous thermal payloads.

  • Precision AR Coatings: Custom-engineered anti-reflection coatings optimized for 3-5 μm (mid-IR), 8-12 μm (thermal imaging), or 3-12 μm broadband spectrums to guarantee maximum photon transmission.
  • Extreme Ruggedness: Features a massive Knoop Hardness of 780—twice that of standard fluorides—providing an impenetrable optical shield for physically demanding and heavy-duty environments.
  • Strict Thermal Engineering: Precision-calibrated for high-density (5.33 g/cm³) rugged systems operating below 100°C, completely preventing thermal runaway while maintaining absolute signal integrity.
 
 
 
 
Request For Quotations
Germanium (Ge) windows are available off-the-shelf with three anti-reflection coating options: 3 – 5μm for mid-infrared applications, 3 – 12μm for broadband multispectral applications, or 8 – 12μm for thermal imaging applications. Due to its high index of refraction (around 4.0 from 2 – 14μm), an anti-reflection coating is recommended on these germanium windows for sufficient transmission in the region of interest. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such, these germanium windows should be used at temperatures below 100°C. Germanium’s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems. The Knoop Hardness of germanium (780) is approximately twice that of magnesium fluoride, making it ideal for infrared applications requiring rugged optics.