The vibration phenomenon during pulsed laser heating of micro-beams is investigated.The beam is made of silicon and js heated by a laser pulse with a non-Gaussian temporal profile and with an ultrashort pulse duration of 2ps.which incites vibration due to the thermoelastic damping effect.This coupled thermoelastic problem is solved using an analytical-numerical technique based on the Laplace transformation.The damping ratio and resonant frequency shift ratio of beams due t0 the air damping effect and the thermoelastic damping ettect are also examined and discusssed.