SEDL / STP / STP1038-EB / STP24407S

Ultrafast Imaging of Optical Damage in PMMA

Zyung, T
School of Chemical Sciences University of Illinois at Urbana Champaign, Urbana, IL.

Kim, H
School of Chemical Sciences University of Illinois at Urbana Champaign, Urbana, IL.

Postlewaite, JC
School of Chemical Sciences University of Illinois at Urbana Champaign, Urbana, IL.

Dlott, DD
School of Chemical Sciences University of Illinois at Urbana Champaign, Urbana, IL.

Pages: 7    Published: Jan 1988

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Abstract

A new imaging system with ultrafast (75 ps) time resolution, the “picosecond microscope” is used to study the damage dynamics of PMMA irradiated at 532 nm. A small diameter (50 μm), intense laser pulse is used to damage the PMMA, and a larger diameter, delayed probe pulse is imaged onto a video camera detector. The resultant time-dependent images are a “motion picture” of the damage process.