SEDL / STP / STP689-EB / STP39123S

Improved PbF² Coatings for the Infrared

Baumeister, P
Aerojet Electrosystems Co., Azuza, CA

Arnold, GP
Aerojet Electrosystems Co., Azuza, CA

Edwards, DF
Aerojet Electrosystems Co., Azuza, CA

Pages: 2    Published: Jan 1979

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Abstract

A technique is described for reproducibly depositing single layer PbF² antireflection coatings for CdSe that have a damage threshold of about 50 MW/cm² for 2.87 μm laser radiation. This is an 8-fold increase in damage resistance over coatings made by other methods. These same coatings applied to Ge have a damage threshold of about 22 MW/cm². The coated Ge value is less probably due to the index mismatch between the PbF² and the Ge.