Description

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.

Prime features

• 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

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.

Specifications

Quality Assurance to BS EN 9001:2000

Production capabilities

• 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.

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

(* Please note that all values quoted are based on test pieces and may vary according to component design. These values are not guaranteed in any way and should only be treated as indicative values. They should be used for guidance only and for no other purpose whatsoever.)

Reflectance curve

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

Ceramic Reflectors For Lamp-pumped Solid-state Lasers

BAB – the external shape is round;
ZAB – the external shape is irregular;
LAK – the external shape is rectangular but one side is concave;
EAB - the external shape is rectangular;
GAZ - the external shape is triangular.

Remark: 1) unit: mm; 2) Distance means the distance between lamp and rod in sing-lamp configuration and the distance between two lamps in dual-lamp configuration.

Ceramic Reflectors For Diode-pumped Solid-state Lasers:

Description of part number: CRDP-XX-YY-Z-AAA-BBB

CRDP: ceramic reflector for diode-pumped solid-state laser

XX – internal diameter of the reflector in mm.

YY -  reflector length in mm.

Z – number of the diodes to be placed around the laser rod.

AAA – related to the cross section of the reflector such as  TRI (triangle shape), CRL (round shape), PLT (plate shape)

BBB – variant for remarks

Ceramic Reflectors For Beauty and IPL Applications:

Description of part number: CRIPL-XX-YY-BBB

CRIPL: ceramic reflector for beauty and IPL applications

XX – internal diameters or angler of the reflector in mm/degree

YY -  reflector length in mm.

BBB – variant for remarks

As far as the IPL parts are concerned, there are many “variation on the same theme” in order words the angle may be slightly different, length could vary and some parts have no holes, others have several holes.  Parts could also be glazed or un-glazed.  We can make any parts and we could adapt the drawings to customer’s requirements’.