Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1785167 | Infrared Physics & Technology | 2008 | 4 Pages |
Abstract
This paper is a description of the analytical model developed to study the temperature distributions in solid materials heated by powerful laser pulses. The calculations are based on a three-dimensional model of heat diffusion in solids using the integral transform method. Our model takes into account the one-, two-, three- and four-photon absorption. Specific results are presented for an application of the model to a InSb sample heated with a pulsed CO2 laser. The results indicate that (i) the two-, three-photon absorption does produce detectable temperature variation but the four-photon absorption may produce detectable variation only at very high laser beam intensity; (ii) the surface absorption coefficient does play a very important role in temperature distribution; (iii) the field temperature depends on the duration of the pulse.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Mihai Oane, Aaron Peled, Florea Scarlat, Ion N. Mihailescu, Anca Scarisoreanu, Geo Georgescu,