Germanium Circular Optical Windows, Firebird Optics

Supplier: Firebird Optics
GE-50X3 GE-25X4-BBAR3-12UM GE-25X4 GE-50X3-BBAR3-12UM GE-38X6 GE-38X6-BBAR3-12UM
76627-920EA 1190.95 USD
76627-920 76627-924 76627-922 76627-918 76627-926 76627-916
Germanium Circular Optical Windows, Firebird Optics
Optical Windows
Germanium or Ge has high transmission in the range of 2 to 16 μm and is best used in mid-IR and long wave IR applications. Due to its low dispersion, it is a common choice for use in low power CO₂ laser applications. Germanium also is opaque throughout the entire visible spectrum, making it ideal for applications where only IR transmission is desired.

  • Germanium is inert to air, water, alkalis and many acids, which makes it a robust, versatile material
  • 60/40 scratch dig

Germanium windows are optical windows that are completely impermeable to UV and VIS light giving them a dark, metallic appearance to the naked eye. However, when it comes to the IR range this is where germanium truly shines with an excellent, broad transmission range from 2 to 16 μm making it an ideal candidate for Mid-Wave-IR (MWIR) and Long-Wave IR (LWIR) applications. The sharp transmission cut-off before 2 µm also enables germanium to be used as a long pass filter, only transmitting wavelengths in excess of 2 µm and fully blocking everything before it.

Packaging: Windows are packaged in moisture-protective packaging.

Caution: Care must be taken to avoid scratching the surface as the material is soft. Not recommended for use in harsh environments, Zinc Selenide is toxic and care must be taken when handling, always wear rubber or plastic gloves to avoid risk of contamination.
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