Degradation Mechanisms In High Power Algaas Lasers
As optical designs continually improve, limiting conditions on the image quality ultimately depend on the quality of the components. Surface roughness scatters light, reducing intensity and contrast. Quantitatively, optical surfaces can be evaluated using the bidirectional reflectance distribution function (BRDF). This statistical, Fourier-transform approach used to characterize surfaces gives an rms roughness of the surface. Quantifying contamination— dust particles on a mirror, for instance—is not nearly as well-developed.
Log in or Become a member to view the full text of this article.
This article may be available for purchase via the search at www.osapublishing.org.
OSA Members get the full text of Optics & Photonics News, plus a variety of other member benefits.