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Laser Scribing of Ceramics

From World Lasers, Inc.
 

 

Alumina (also known as Aluminum Oxide, Al2O3) is an extremely good electrical insulator with fantastic thermal properties - for this reason it is often used in the electronics sector for thin film substrates on circuit boards. Other applications
include sensors and power transistors in the automotive industry, amplifiers in telecoms and military applications. It is principally scribed, 60% cut and then broken. The performance of the SPI 200W fiber laser for the scribe and Break of alumina investigated here.

Above 350 Hz repetition rate, (20% duty cycle, 40W average power) there was a clear coupling threshold above which alumina could be reliably perforated.

Above a set average power threshold, it is possible to scribe standard commercial alumina at high speeds.

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