The fluence dependence of the laser ablation of selected polymers was studied within the range from 1-150 J/cm2. A
TEA CO2 laser operating at 10.6 μm with 300 ns main pulse length and up to 20 J pulse energy was used to ablate
prepared polymer samples with single pulses of laser energy. Measurements of parameters such as the ablated mass per
spot area (Δma), momentum coupling coefficient (Cm), specific impulse (Isp), and internal efficiency (ηi) will be plotted
as functions of fluence. Critical threshold effects observed throughout the experiments will be described in detail.