Ceramic Reflector (Ceramic Diffuse Reflector)

Aug 30, 2020
Ceramic Reflector (Ceramic Diffuse Reflector)

Ceramic reflectors are recently used in laser pump chambers. Its main advantages are long life time.


A porous alumina ceramic of99.7% Al2O3content, used extensively for long-life laser reflectors. This material is sintered at high temperatures to achieve a controlled porosity.

Prime features

Typical applications   Pumping chambers for Nd:YAG lasers — low to high power, single or multiple lamp designs. Pumping chamber reflectors of this material are virtually indestructible, and prove a highly cost effective alternative to metal coated types.


Production capabilities

Physical properties*

Reflectance curve

  • Surfaces can be sealed and coated with a solarization-resistant glaze to give high bulk refectivity

  • 97.8% reflectance efficiency at 1000nm

  • Reflectance efficiency exceeds 96% across the wavelength range 500-2000nm(see curve)

  • Controlled porosity

  • Good thermal conductivity

  • High electrical resistivity

  • Quality Assurance to BS EN 9001:2000

  • Components up to 250mm long and 80mm wide/diameter manufactured as standard

  • Larger components manufactured to development contracts

  • One-piece or split-cavity designs

  • Prototype, batch and volume production.

  • Color:White

  • Bulk density (fired), Mg/m3 :3.2

  •   Porosity (apparent), % nominal:20

  •  Flexural strength (ASTM C1161, 3-point), MPa:150

  •  Thermal expansion coefficient

  •  200-500C, 10-6/C 7.9  

  • 200-1000C, 10-6/C9.0

  • (Efficiency:Wavelength, from independent tests carried out at the UK's National Physical Laboratory)