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Germanium (Ge) Wedged Windows

Germanium (Ge) Wedged Windows

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Germanium (Ge) Wedged Windows provide laser output protection for beam sampling applications and are used to eliminate fringe patterns from etalon effects as well as prevent cavity feedback. Germanium is insoluble, making it inert to water, air, alkalis and acids except nitric acid. Because germanium is subject to thermal runaway, these windows should be used at temperatures below 100°C. Germanium’s high density (5.33g/cm3) should be considered when designing for weight-sensitive systems, and its high index of refraction (~4.0 from 2 - 14μm) should be considered for applications looking to maximize throughput. Germanium (Ge) Wedged Windows offers a broad transmission range and a Knoop Hardness of 780 (approximately twice that of magnesium fluoride), making it suitable for infrared applications requiring rugged optics.

 
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