The laser also can be used for scribing or drilling holes and, due to the pulse regime, can enable high aspect ratio cutting in thick section silicon but eradicate micro-cracking that is usually caused by excessive heat input.
Miyachi Unitek (Monrovia, CA) announced a new application--battery pack/tab laser welding. Pulsed Nd:YAG lasers are perfectly suited to address these battery tab and pack welding challenges. Already established in many other battery welding applications, pulsed Nd:YAG lasers are ideal for performing cost-efficient tab and pack welding with minimal heat input. They offer an extremely fast and flexible joining method capable of welding many spots in under a second. Nd:YAG lasers are perfect for joining high conductivity tab materials and orientating the welds to match the strength requirements with no limitation on weld diameter or proximity.