Title

Effective" Surface Psd For Bare Hot Isostatic Pressed (Hip) Beryllium Mirrors

Abstract

Our understanding of the relationship between optical surlace topography and scattering behavior has improved in recent years to the point where the scattering characteristics of optical systems are routinely controlled by placing specifications upon the root-mean-square (rms) surface roughness. Bare polished hot isostatic pressed (HIP) beryllium (Be) has consistently failed to obey the established topographic surface scatter models. Surface scatter in the form of the Bidirectional Reflectance Distribution Function (BRDF) from bare beryllium mirrors using several test wavelengths will be presented in this paper. This experimental data indicates that non-topographic scattering effects are significant for bare beryllium mirrors. An empirical "effective" surface power spectral density (PSD) function will be developed that can be used to predict the scattering behavior of bare polished HIP Be from topographic rms surface roughness data.

Publication Date

12-1-1991

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

1530

Number of Pages

144-149

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.50504

Socpus ID

29144466837 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/29144466837

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