Laser heating of a finite silver selenideslab

• Published in: Optics and laser technology Vol. 49; pp. 231 - 236
• Main Authors: El-Adawi, Mohamed K., Al-Fanakh, Hoda S.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2013
• Subjects: Laser heating of silver selenide (Ag2Se) Slab according to (PHCE) model—Fourier Expansion technique in solving boundary value problems; Laser heating of silver selenide (Ag2Se) Slab according to (PHCE) model—Fourier Expansion technique in solving boundary value problems
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2012.12.031

The problem of heating a finite homogeneous silver selenide slab induced by time dependent laser irradiance is studied. The Fourier Series Expansion Technique and the Parabolic Heat Conduction Equation(PHCE) are considered to obtain the required temperature field within the solid target. The critical time required to initiate melting at the front surface and the time interval required to initiate phase transition for the considered slab are computed as an illustrative example. ► Thermal effects induced in silver selenide slab by laser pulse are studied by PHCE model. ► The temperature profile is obtained. ► The time required to initiate phase transition from α▒to▒β▒phase is estimated. ► The dependences on the reflectivity, the maximum power density of the pulse are linear. ► The dependence on the target thickness is not linear.