Pulsed CO2 laser interaction with a metal surface at oblique incidence
- 15 January 1980
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 36 (2) , 125-127
- https://doi.org/10.1063/1.91403
Abstract
Thermal fluence deposition and surface pressure generation produced by a CO2 laser pulse (λ=10.6 μm, during 10 μs, maximum intensity 3 MW/cm2) have been measured as a function of angle of incidence ϑ on sheet aluminum in air. We find that air plasma ignition depends on the laser beam intensity I0 only, not on the surface‐normal flux I0 cosϑ. Conversely, the fluence deposition and surface pressure depend only on the product I0 cosϑ, and obey the square‐root and two‐thirds‐power dependences observed with simple I0 variation at normal incidence.Keywords
This publication has 8 references indexed in Scilit:
- Pulsed-CO2-laser interaction with aluminum in air: Thermal response and plasma characteristicsJournal of Applied Physics, 1979
- Plasma Energy Transfer to Metal Surfaces Irradiated by Pulsed LasersAIAA Journal, 1978
- The spatial distribution of heating of aluminum targets by laser-ignited air plasmasApplied Physics Letters, 1978
- Initiation of laser-supported-detonation (LSD) wavesJournal of Applied Physics, 1978
- Large-spot thermal coupling of CO2 laser radiation to metallic surfacesJournal of Applied Physics, 1976
- Effect of beam intensity on target response to high−intensity pulsed CO2 laser radiationJournal of Applied Physics, 1975
- An Absolute Method of Measuring Energy Outputs from CO2 LasersReview of Scientific Instruments, 1973
- EFFECT OF MODE BEATING IN LASER-PRODUCED GAS BREAKDOWNApplied Physics Letters, 1967