Ultrafast pulsed laser micro-deposition printing on transparent media

摘要

Ultrafast pulsed laser ablation is employed in laser-induced backward transfer for printing on transparent media. By combining a high pulse repetition rate of 1 MHz and an ultrashort pulse duration of 700 fs in an ultrafast fiber laser, we demonstrate printing of bitmap images and vector graphics with nearly continuous gray scales and high linear printing speeds up to 10 m/s. In addition, we find that the printing process preserves several original functional properties of the target material, and as an example of functional printing, we demonstrate printing of phosphorescent images.