Alumina-based ceramic reflectors target solid-state lasers

Morgan’s proven Sintox AL material, a porous high purity alumina (99.7% Al2O3), boasts high strength, good thermal conductivity and excellent dimensional and electrical stability in the operating temperature range.

Longer lasting and featuring high reflectance over a wide wavelength range, Sintox AL provides a cost effective alternative to metal-coated reflectors. It exhibits 97-99% reflectance over an optimum reflectance range from 570-2000nm. Process control and repeatability allows production of material with controlled porosity – a necessity for high quality laser light generation.

Morgan offers three proprietary glaze options that protect the underlying porous ceramic from cooling fluids in operation and can be coloured to restrict wavelength range. A clear yellow glaze absorbs radiation at the Nd-YAG lasing wavelength of 1064nm and further transitions near 940, 1120, 1320 and 1440nm. A high-absorption samarium oxide glaze is formulated through controlled addition of dopant to create optimum reflectance properties. The samarium oxide glaze matches yellow and clear glazes between 700-900nm for reflectance.

With the design capability to produce customer-specific solutions and standard products, Morgan offers one piece, two-piece and complex geometries. Components up to 250mm long and with diameters up to 80mm are manufactured as standard.