Abstract
Ablation of optically thin liquid 2-propanol layers of variable thickness on IR-transparent solid Si substrate by a nanosecond CO 2 laser has been experimentally studied using time-resolved optical interferometric and microscopy techniques. Basic ablation parameters - threshold fluences for surface vaporization and explosive homogeneous boiling of the superheated liquid, ablation depths, vaporization (ablation) rates, and characteristic ablation times versus laser fluence - were measured as a function of alcohol layer thickness. The underlying ablation mechanisms, their thermodynamics, and microscopic details are discussed.
c 2006 American Institute of Physics
Original language | American English |
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Journal | Journal of Applied Physics |
Volume | 100 |
DOIs | |
State | Published - Sep 1 2006 |
Externally published | Yes |
Keywords
- ablation parameters
- superheated liquid
- time-resolved optical interferometry
- vaporization rates
- carbon dioxide lasers
- interferometry
- laser ablation
- optical microscopy
- substrates
- vaporization
- thin films
Disciplines
- Physics