Journal des lasers, optiques et photoniques

The Mechanical Properties and Weldability of Pure Copper Foils Welded Using a Blue Diode Laser

Abstract

Tirimasu Sukto

Copper is an essential material in various industrial applications due to its excellent electrical and thermal conductivity. Pure copper foils are particularly significant in electronics, where they are used for circuit boards, connectors, and heat sinks. However, welding copper foils poses significant challenges due to copper’s high reflectivity and thermal conductivity. Traditional welding techniques often struggle with copper, leading to defects and suboptimal joints. The advent of blue diode lasers has introduced a promising method for welding copper due to their ability to overcome these challenges. This paper explores the mechanical properties and weldability of pure copper foils welded using a blue diode laser, focusing on the unique advantages and potential limitations of this method.