Ultraviolet (UV) excimer laser ablation technique suitable for precision micromachining of biobased materials such as wood and wood-based materials, particularly suitable for detailed micromorphological studies of wood-polymer interfaces and micro-crack formation in wood cell-walls. The present experimental set-up is a pulsing UV exciplex (excited complex) laser that applies a krypton fluoride (KrF) compound resulting in a laser light of wavelength 248 nm.