Rotational Effects on Magneto-Photo-Thermoelastic Wave Propagation in a Fiber-Reinforced Anisotropic Semiconductor Half-Space Under Optical Excitation.

This study investigates the coupled rotating magneto-photo-thermoelastic behavior of an anisotropic fiber-reinforced semiconductor half-space subjected to optical excitation and an applied magnetic field. The governing equations, incorporating thermal, elastic, carrier-density, electromagnetic, and rotational effects, are formulated within a unified multiphysical framework. The normal mode method is employed to transform the coupled partial differential equations into a system of ordinary differential equations, which is subsequently rewritten as a first-order matrix differential system. An eigenvalue-based formulation is then developed to construct the analytical solution of the coupled problem. The resulting eigenvalue problem, boundary-condition system, and field quantities are evaluated numerically. Numerical results are presented for the temperature, carrier density, displacement components, and stress distributions to examine the effects of the rotation parameter and magnetic field intensity on the coupled physical fields. The results demonstrate the important role of rotational and electromagnetic interactions in modifying wave propagation, attenuation characteristics, and field distributions within the anisotropic semiconductor medium. Numerical computations were carried out for a silicon-based semiconductor medium.