Machine type used Lumonics Sigmaclean wafer marking laser system
Laser Source Nd:YAG Pumped Diode
Application wafer ID codes
Completion Year 1990
Customer All UK based Semiconductor plants
Material Silicon

Automatic laser marking of silicon wafers in batch format. The laser marking can be produced in either hard or soft mark configurations. Dot matrix fonts are traditionally used to minimise the amount of disruption to the surface. With soft mark no material is removed during the laser marking process, therefore reducing contamination across the wafer area.

The process used diode pumped lasers, which have now been replaced by fibre lasers due to the control ability pulse to pulse. Laser marking of silicon is done in such a way as to ensure there is no negative impact on the remainder of the manufacturing process. Further, the markings must be machine readable, so precision is of increased importance.

If you would like further information on this laser marking application, or any other application, please request a call back, or talk to one of our laser marking specialists on 01737 826902.

Our Case Studies

laser marking anodised aluminium

Laser marking Anodised Aluminium – Electrical symbols

Anodising has become a dominant form of finishing for aluminium. This is largely due to its cost effectiveness, availability and suitability, across a whole host of applications and industrial sectors. Laser marking anodised aluminium, has also become an accepted process across these industrial sectors.

Anodising is an electrolytic passivation process. It changes the microscopic texture of the aluminium by modifying the crystal structure near the surface. The passivation thickness will be between 10 and 25 microns, generally between 10 and…

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laser marking anodised aluminium equipment front panel

Laser marking anodised aluminium – equipment front panels

Anodising has become a dominant form of finishing for aluminium. This is largely due to its cost effectiveness, availability and suitability, across a whole host of applications and industrial sectors. Laser marking anodised aluminium, has also become an accepted process across these industrial sectors.

Anodising is an electrolytic passivation process. It changes the microscopic texture of the aluminium by modifying the crystal structure near the surface. The passivation thickness will be between 10 and 25 microns, generally between 10 and…

VIEW CASE STUDY
product branding by laser marking anodised aluminium

Product branding by laser marking anodised Aluminium

A good example of product branding by laser marking is anodised aluminium. It is used in high end audio accessories in the form of cable tidies.  The aluminium is highly polished, prior to anodising, in order to achieve the high gloss finish on the part.

The laser process, delivers small pulses of energy to the component surface. These pulses have enough energy to vaporise the surface of the aluminium where the anodised coating occurs. This exposes the base material, aluminium,…

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