Study of photothermal effects induced by a laser pulse in a nonlocal semiconducting half-space with a surface temperature-dependent absorption coefficient

In laser material processing, particularly in semiconductor applications, it is often necessary to maintain a specific surface temperature or at least prevent a temperature decrease even after the laser is turned off. In this work, the response of a nonlocal semiconducting half-space induced by a laser pulse is analyzed by considering a medium absorption coefficient that varies with the surface temperature. The recently modified Green–Lindsay (MGL) theory is employed to investigate thermoelastic interactions. A surface absorption technique is employed to illuminate the medium, whose surface is assumed to be traction-free. The general solution is obtained via the integral transform method, employing a dual transformation formula based on the Laplace and Hankel transforms, with the inverse Laplace transform computed numerically. The results are presented graphically to illustrate the influence of the absorption coefficient as a function of the surface temperature on the behavior of the nonlocal semiconducting medium. The results indicate that the absorption coefficient, which depends on the medium surface temperature, plays a significant role in controlling the medium temperature.