Patent ID: 7773216

Claim:
A method of selecting composite sheet materials for use in ultra-fast laser patterning and of patterning of one or more layers of a multi-layered thin structure, comprising: measuring each layer's absorption spectrum; making a comparison between absorption spectra of an upper layer and absorption spectra of its respective underlying layers; determining if the upper layer is ablatable without damage to its respective underlying layers based on the comparison; performing an examination of each layer's thermal, strength, and absorption spectra; deriving appropriate wavelength (λ), pulse width (τ), spectral width (Δλ), spot size, bite size, and fluence based on the examination; and using an ultra-fast laser programmed with the appropriate wavelength (λ), pulse width (τ), spectral width (Δλ), spot size, bite size, and fluence to pattern said one or more layers.