... and integrated 45° in‐plane mirror structures were made in a low loss acrylate‐based photopolymer using excimer laser ablation. The fabrication of multimode waveguides and mirrors was carried out in a single laser system which minimised alignment issues. Findings It was established that in‐plane mirror...

... provide the first insights into potential microvia membrane issues and debris characteristics. Laser ablation Polyimide film Flexible printed circuits Metallization Microvias Metals Lasers Top diameter measurements have been shown to increase significantly as fluence increases...

...Todd Young; Mike Carano; Frank Polakovic As high density interconnect (HDI) technologies become accepted in the printed circuit board (PCB) industry, build‐up multilayer (BUM) technologies utilizing laser ablated microvias have grown in popularity. This paper will look at the thermal reliability...

... density of laser beam. A certain defocus can make both crater diameter and removing efficiency increase for a relatively high power density. Meanwhile, the thermal effect in the process of 355nm laser ablation of RCC^R cannot be neglected. The difference between the fluences may be partly...