Laser Welding for Optoelectronic Applications

Abstract

Pulsed laser welding is a specialty joining technique used in optoelectronic packaging to produce precision spot welds for maintaining optical alignments and overlap seam welds for hermetic sealing. The laser technique produces minimal thermal distortion, and provides accurate weld fusion zone placement and design flexibility for manufacturing. This paper discusses the technology in terms of alignment and joining criteria, laser techniques, and technical guidelines for laser materials processing.