Germanium

Where to begin

A high-index material used in infrared lenses and windows, with coating and temperature behavior to review.

Design consideration

Review thermal sensitivity and surface reflection.

Confirm the finished optic

The spectral regions on this site are orientation notes, not guaranteed transmission ranges. Ask for the material grade, thickness and measured transmission curve; include the coating and operating temperature in your review.

Reference

Edmund Optics: common laser optics materials and infrared material selection.