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Germanium (Ge) Windows

  • Stocked and custom Germanium (Ge) windows available
  • Maximum diameter 300mm
  • Broad wavelength range covering 2000-16000nm, excellent for IR applications
  • Coating options: DLC coating, AR@3-5μm, AR@8-12μm, BBAR@3-12μm
Inquire for custom product  
Code Material Diameter Thickness Coating Unit Price Delivery Cart
320-001 Ge 10mm 2mm AR/AR $33.0 2 weeks
320-002 Ge 12mm 1mm AR/DLC $30.0 2 weeks
320-003 Ge 12mm 1mm AR/AR $29.0 2 weeks
320-005 Ge 18mm 1mm AR/DLC $38.0 1 week
320-006 Ge 20mm 1mm AR/DLC $40.0 2 weeks
320-007 Ge 25.4mm 1mm Uncoated $46.0 1 week
320-008 Ge 25.4mm 1mm AR/DLC $50.0 1 week
320-009 Ge 29mm 2mm AR/DLC $61.5 30 Days
320-010 Ge 33mm 1mm AR/DLC $55.0 30 Days
320-011 Ge 50.8mm 3mm AR/DLC $118.0 1 week
320-012 Ge 52mm 3mm AR/DLC $120.0 1 week
320-013 Ge 60mm 2mm AR/DLC $130.0 1 week
320-014 Ge 60mm 3mm AR/DLC $169.0 1 week
320-015 Ge 65mm 3mm AR/DLC $190.0 1 week
320-016 Ge 70mm 3mm AR/DLC $210.0 1 week
320-017 Ge 76mm 3mm AR/DLC $260.0 30 Days
320-018 Ge 80mm 3mm AR/DLC $270.0 1 week
320-019 Ge 85mm 3mm AR/DLC $295.0 30 Days
320-020 Ge 91.8mm 3mm AR/DLC $340.0 1 week
320-021 Ge 100mm 4mm AR/DLC $510.0 30 Days
320-022 Ge 101.6mm 1mm AR/DLC $200 1 week
320-023 Ge 101.6mm 4mm AR/DLC $520.0 30 Days

Germanium Windows are ideal for infrared spectrum applications for its broad transmission range and opacity in the visible portion of the spectrum. Germanium is commonly used in infrared (IR) thermal imaging systems operating in the 2 µm to 14 µm spectral range, and covers both the LWIR and MWIR spectrum. Ge windows are relatively more rugged than other infrared (IR) materials,  it is often used as protective windows for thermal cameras, or long-pass filters for wavelengths above 2000nm. Germanium also has the virtues of high chemical inertness and low chromatic aberration. But germanium would begin to become opaque in the IR spectrum when the temperature rises above 90℃, one should take caution when it is used in high-temperature applications.

Hangzhou Shalom EO offers both off-the-shelf and custom Germanium Windows, the maximum diameter is 300mm. For the off-the-shelf versions, the specifications and transmission curves after coating are all listed individually. Because Germanium has a considerably large refractive index, AR coatings are crucial to ensure high transmission. Coating options available include DLC (Diamond Like Carbon) coating, AR@3-5 micro, AR@8-12 micro, and BBAR@3-12 micro, Shalom EO is capable to fabricate the Germanium optical windows with the precision and coating sets according to your requests.

Germanium(Ge) Windows D101.6x1mm with AR/DLC Coating

Germanium(Ge) Windows D101.6x1mm with AR/DLC Coating

Germanium(Ge) Windows D60x3mm with AR/DLC Coating

Germanium(Ge) Windows D60x3mm with AR/DLC Coating

Germanium(Ge) Windows D33x1mm with AR/DLC Coating

Germanium(Ge) Windows D33x1mm with AR/DLC Coating