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- 2010 (1)
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- Beitrag zu einem Tagungsband (1) (entfernen)
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- Englisch (1)
Referierte Publikation
- ja (1)
Schlagworte
- Laser damage (1)
- Laser safety (1)
- Polymer (1)
- Time-resolved reflectivity measurements (1)
- Ultrashort laser pulses (1)
This contribution investigates laser-induced damage of thin film and bulk polymer
samples, with the focus on physical processes occurring close to the damage threshold. In-situ
real-time reflectivity (RTR) measurements with picosecond (ps) and nanosecond (ns) temporal
resolution were performed on thin polymer films on a timescale up to a few microseconds (µs).
A model for polymer thin film damage is presented, indicating that irreversible chemical
modification processes take place already below the fluence threshold for macroscopic damage.
On dye-doped bulk polymer filters (as used for laser goggles), transmission studies using fs-and
ps-laser pulses reveal the optical saturation behavior of the material and its relation to the
threshold of permanent damage. Implications of the sub-threshold processes for laser safety
applications will be discussed for thin film and bulk polymer damage.