Laser induced forward transfer of metal oxides using femtosecond double pulses

• Published in: Applied surface science Vol. 257; no. 2; pp. 508 - 511
• Main Authors: Papadopoulou, E.L., Axente, E., Magoulakis, E., Fotakis, C., Loukakos, P.A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.2010; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Femtosecond; Laser induced forward transfer; Lasers; Lift; Metal oxides; Microprocessing; Microstructure fabrication; Physical radiation effects, radiation damage; Physics; Pulse shaping; Separation; Spatial distribution; Spots; Structure and morphology; thickness; Structure of solids and liquids; crystallography; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology; Thin films; Titanium dioxide; Transparent conductive oxides; Ultrafast laser materials processing; Ultraviolet, visible, and infrared radiation effects (including laser radiation); Transparent conductive oxides; Laser induced forward transfer; Microstructure fabrication; Pulse shaping; Microprocessing; Ultrafast laser materials processing; Scanning electron microscopy; Inorganic compounds; Physical radiation effects; Transition element compounds; Thin films; Spatial distribution; Laser radiation; Zinc oxide; Silicon; Microstructure; Titanium oxide
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2010.07.022

Laser induced forward transfer (LIFT) of ZnO and TiO2 thin films onto Si has been realized with femtosecond double pulses of equal intensity, as a basic form of pulse shaping. In an effort to investigate the possibility to control the spatial distribution of the transfer via pulse separation, we used separation times varying from 0 to 10ps. We have found that the size of the transferred spots increases by as much as 50% for pulse separation up to 500fs, while for longer pulse separations the transferred spots acquire a constant area.