Abstract
Ablation and etching of organic polymers by UV laser pulses is a nonlinear process which is seen to proceed at a significant rate only when a threshold in power density (which is a function of the polymer) is exceeded. This threshold has been interpreted1,2 as the point at which the rate of up-pumping of the chromophores in a volume element of the polymer exceeds the rate of deactivation of the excited chromophores by internal conversion of the energy into nonradiative nondecomposing channels.
© 1989 Optical Society of America
PDF ArticleMore Like This
R. SRINIVASAN, EMILE SUTCLIFFE, and BODIL BRAREN
THK1 Conference on Lasers and Electro-Optics (CLEO:S&I) 1988
YUN-YEN J. YANG, SHYAN-JER LEE, and SUSAN D. ALLEN
THD5 Conference on Lasers and Electro-Optics (CLEO:S&I) 1989
S. KUPER and M. STUKE
THD2 Conference on Lasers and Electro-Optics (CLEO:S&I) 1989