Abstract
Time-resolved microscopy in a variety of configurations is used for three-dimensional imaging of laser photothermal materials used in offset lithographic computer-to-plate printing applications. Materials having an ink-repelling silicone layer and either a metallic absorbing layer or an energetic absorbing layer are studied. The energetic layers result in lower exposure thresholds when 10 microsecond and 2 microsecond duration near-IR laser pulses are used. The images explain the mechanism of threshold lowering, as a result of hot gas from the energetic layer causing the silicone layer to balloon. The expanding balloon results in less laser energy needed to produce an exposed spot.
| Original language | English (US) |
|---|---|
| Article number | 247 |
| Pages (from-to) | 24-33 |
| Number of pages | 10 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5580 |
| DOIs | |
| State | Published - 2005 |
| Event | 26th International Congress on High-Speed Photography and Photonics - Alexandria, VA, United States Duration: Sep 20 2004 → Sep 24 2004 |
Keywords
- Laser ablation
- Lithographic printing
- Microscopy
- Photothermal imaging
- Time-resolved imaging
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering