Volume 83, Number 3, August 2008
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||23 July 2008|
Triazene photopolymer dynamic release layer-assisted femtosecond laser-induced forward transfer with an active carrier substrate
Optoelectronics Research Centre, University of Southampton - Southampton SO17 1BJ, UK, EU
2 General Energy Research Department, Paul Scherrer Institut - 5232 Villigen PSI, Switzerland
3 EMPA, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for Functional Polymers Überlandstrasse 129, 8600 Dübendorf, Switzerland
Corresponding author: firstname.lastname@example.org
Accepted: 13 June 2008
Discs of solid material have been forward transferred from thin films on transparent carrier substrates using femtosecond Ti:sapphire laser-induced forward transfer (fs-LIFT) with a triazene polymer dynamic release layer (DRL). The fluence threshold for fs-LIFT was found to be only ≈20% of the DRL ablation threshold at the laser wavelength. This decrease is attributed to ultrafast shock-wave generation in the constrained polymer layer under femtosecond irradiation being the driving force for fs-LIFT with the polymer DRL. The result is very different from the nanosecond regime, where the LIFT threshold is observed to be slightly above the polymer ablation threshold. White-light continuum generation in a carrier substrate is observed and its influence on the fs-LIFT process is discussed.
PACS: 81.15.Fg – Laser deposition / 64.70.km – Polymers / 42.65.Ky – Frequency conversion; harmonic generation, including higher-order harmonic generation
© EPLA, 2008
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