Germanium has long been a cornerstone material in infrared optics, prized for its exceptional transmission and thermal conductivity. However, rising costs and supply challenges have made it increasingly difficult to obtain.
These limitations leave industries relying on infrared optics searching for alternative materials that deliver the same—or better—performance without significant drawbacks.
What Are the Best Alternatives to Germanium?
Andover Corporation offers a range of high-performance materials for infrared optics that address the limitations of germanium while delivering new possibilities for optical design.
One standout alternative is chalcogenide glass, 
known for its high infrared transmission, thermal stability, and design flexibility. Unlike germanium, chalcogenides can be molded into complex shapes, making them ideal for advanced optical systems like thermal imaging and laser rangefinders.
Other advanced materials include:
- Calcium Fluoride (CaF₂): A durable, lightweight material with a wide transmission range, suitable for precision laser systems and environmental monitoring.
- Zinc Selenide (ZnSe): Known for its excellent transmission across 600 nm to 21 µm, making it a go-to choice for CO₂ laser optics.
- Sapphire: With exceptional hardness and resistance to thermal stress, sapphire is perfect for harsh environments in aerospace and defense.
Andover Corporation: Precision in Every Solution
At Andover Corporation, we combine decades of expertise in optical coatings with vertically integrated manufacturing to deliver consistent quality and performance.
Our ability to precisely coat advanced materials, such as chalcogenide glass, ensures that your optical systems perform reliably across demanding applications. We are proud to be listed as a Qualified Coating Partner for SCHOTT North America, a leading manufacturer of chalcogenide glasses for Infrared applications, and we bring unparalleled knowledge and innovation to every project.
Whether it’s thermal imaging for defense, laser optics for industrial applications, or precision optics for aerospace, Andover Corporation provides the materials and solutions you need.
Where Can Alternatives to Germanium Be Used?
Our advanced materials and coatings are trusted across a variety of industries, including:
- Thermal Imaging Systems: Ensuring clarity and performance for defense, medical, and industrial applications.
- Laser Systems: Supporting rangefinding, communication, and targeting systems.
- Aerospace and Defense Optics: Providing lightweight, thermally stable solutions for extreme environments.
What’s Next for Your Infrared Optics?
As germanium becomes more difficult and costly to source, Andover Corporation offers innovative alternatives to keep your projects on track. With advanced materials and expertise in precision coatings, we deliver solutions that elevate performance and reliability across infrared optics applications.
Contact us today or submit the request form below to learn more about how our alternatives to germanium can meet your infrared optics needs.