Critical Issues For Coating On Large High Power Laser Components

W. T. Beauchamp

doi:10.1117/12.956361

14 July 1986 Critical Issues For Coating On Large High Power Laser Components

W. T. Beauchamp

Proceedings Volume 0607, Optical Component Specifications for Laser-based Systems and Other Modern Optical Systems; (1986) https://doi.org/10.1117/12.956361
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

Abstract

The coating of large laser optics has all of the usual features of the coating processing of any high power optic but with the complication of large mass, extremely high cost, and sometimes a sensitivity to changes in figure. Increased risk and the critical issues, therefore, mainly result from the great bulk and attendant difficulties in handling, cleaning, heating, cooling, and other process steps with the optic. In addition the materials, size, and configuration used in the construction of the optics can cause difficulties and even compromise in the ability to deposit quality coatings. Potential problems are possible outgassing, the use of soft chemically active surfaces that might compromise the cleanability, poor uniformity of coating thickness that may result from the large thermal mass or complexity of modern laser parts, and the handling difficulties that might arise due to the large weight and cost. The result is a need to take extra special care in the coating process to insure adequate safety and performance. There are also optical effects due to the geometric shapes in modern optical systems and environmental durability effects on the coating from the environments in which the optics are used that must be con-sidered in order to insure adequate system performance of the laser device. The particular issues, the required areas of specifications and the possible coating process limitations are discussed for each of the critical phases of the large optic coating process.

Citation Download Citation

W. T. Beauchamp "Critical Issues For Coating On Large High Power Laser Components", Proc. SPIE 0607, Optical Component Specifications for Laser-based Systems and Other Modern Optical Systems, (14 July 1986); https://doi.org/10.1117/12.956361

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KEYWORDS

Coating

Absorption

Optical design

Optical components

Metals

Reflectivity

Safety

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