Observation of shock waves and cooling waves in the laser ablation of Kapton films in air
Abstract
Deflections of a He-Ne laser beam in excimer and CO2 laser-produced plumes from Kapton films were measured. They show that in addition to the existence of a shock wave observed earlier, a slower cooling wave is also developed. A model calculation is presented which explains the present experimental data as well as previous results regarding the decrease of etching efficiency with increasing ambient gas pressure.
- Publication:
-
Applied Physics Letters
- Pub Date:
- August 1987
- DOI:
- Bibcode:
- 1987ApPhL..51..569K
- Keywords:
-
- Ablation;
- Etching;
- Kapton (Trademark);
- Laser Applications;
- Laser Plasmas;
- Shock Waves;
- Carbon Dioxide Lasers;
- Helium-Neon Lasers;
- Shadowgraph Photography;
- Streak Cameras;
- Plasma Physics