A high-performance UV-DPSS (Diode Pumped Solid State) laser drilling system (wavelength 355nm) for PWB's, which can drill a less than 50micrometers diameter via-hole, has been developed. This system has two main features as follows: 1. A vua-hole without smear is possible to be drilled for PWB's with the optimized irradiation conditions of UV laser. 2. High throughput was realized by using a high power UV-DPSS laser and a developed high-speed control method of galvanometric scanning. This paper describes the outline of the developed UV-DPSS laser drilling system. This system has the advantages which are required small via-holes formation less than 50micrometers in diameter, compares with a conventional CO₂ laser system currently.

Date Published: 25 February 2002
PDF: 4 pages
Proc. SPIE 4426, Second International Symposium on Laser Precision Microfabrication, (25 February 2002); doi: 10.1117/12.456872

Published in SPIE Proceedings Vol. 4426:
Second International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Yong Feng Lu; Koji Sugioka; Jan J. Dubowski, Editor(s)