Journal article
Mechanism for spherical dome and microvoid formation in polycarbonate using nanojoule femtosecond laser pulses.
Abstract
Spherical domes are created on the surface of polycarbonate samples, and microvoids are formed within the bulk using only a femtosecond oscillator with pulse energy of just 0.47 nJ. Size of spherical domes and shape of microvoids are controlled by changing the laser focus inside the material. Their formation is explained by a combination of heat accumulation and dome formation dynamics, where the dome acts as a microlens shifting the laser …
Authors
Meunier T; Villafranca AB; Bhardwaj R; Weck A
Journal
Optics Letters, Vol. 37, No. 15, pp. 3168–3170
Publisher
Optica Publishing Group
Publication Date
August 1, 2012
DOI
10.1364/ol.37.003168
ISSN
0146-9592