Alumina Ceramic Laser Cavity Reflector

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Alumina Ceramic Laser Cavity Reflector

Ceramic Reflector Information:

Diffusive ceramic reflectors for Nd:YAG laserCeramic reflector typical application is 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. A porous alumina ceramic of 99.7% Al2O3 content, used extensively for long-life laser reflectors. This material is sintered at high temperatures to achieve a controlled porosity. Ceramic reflectors also can use many other kinds of lasers, such as for Diode-pumped Solid-state Lasers.
Part No.
99 Alumina


Ceramic reflectors physical properties:
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/C 9.0

Ceramic Reflector features:

Compared to metal reflectors, ceramic units offer higher reflectivity and therefore enhanced laser power. Surfaces can be sealed and coated with a solarization-resistant glaze to give high bulk reflectivity

1. Resists chemical attack
2. Controlled porosity
3. Has high strength
4. Good thermal conductivity
5. High electrical resistivity
6. the surface of the glaze to obtain the maximum reflectivity and easy to clean
7. the wavelength of 600-1000nm at the reflectivity of 98%
8. in the 400-1200nm spectral range of reflectivity of more than 96%
9. the body has the appropriate porous and high strength characteristics
Ceramic cavity reflectors work particularly well in Ruby and Nd:YAG laser pumping chambers and can be a highly cost effective alternative to metal coated reflectors. They are also used extensively as reflectors in housings for high intensity lamps.
– Resist chemical attack
– high strength
– high reflectivity over a broad wavelength band

– good thermal conductivity and electrical stability at all operating temperatures.

Physical Characteristics
– Color: White
– Density: 3.1Mg/m^3
– Porosity: 22%
– Flexural strength: 170Mpa
– Coefficient of thermal expansion:
7.9×10^-6–/С (200~500℃)
9×10^-6/С (200~1000℃)

Al2o3 Ceramic Reflector Applications:

1. Pumping chambers for flash lamp and continuous wave lasers using media such as Nd:YAG lasers, Alexendrite — low to high power,single or multiple lamp designs used for welding, cutting, marking and in medical lasers.
2. Layered and segmented pumping chambers for diode pumped lasers
3. Intense Pulse Light (IPL) applications for cosmetic surgery.

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