Figure 3
From: An automatic tooth preparation technique: A preliminary study
Mathematic model of the Gaussian laser-beam distribution used in the development of the automatic laser-control micropreparation unit in which ω(z) is the section radius of the incident Gaussian beam, which is related to the propagation distance of the light beam; λ is the wavelength of the light beam; f is the focal length of the lens; ω′0 is the waist radius of the emergent light beam; and ZR is half of the emergent light beam’s waist length, which is the effective working length for laser preparation.
