Abstract

Far-ultraviolet-laser irradiation using a pulsed ArF excimer laser at 193 nm has been reported to etch clean and precise patterns in synthetic organic polymers1 and in animal and human tissue2 by a process termed ablative photodecomposition.3 This process is thought to proceed by a photochemical mechanism rather than the photothermal mechanism produced by conventional medical lasers. The process entails the absorption of the UV radiation in an~1-µm layer at the surface of the organic material.

© 1984 Optical Society of America

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