Abstract
The third-order nonlinear optical properties of several porphyrin derivatives incorporated in thin films of polymethylmethacrylate have been measured by degenerate four-wave mixing at 598 nm with 1 ps pulses. Both the magnitude and dynamics of the nonlinear response are measured, with each system exhibiting both a subpicosecond response and a more slowly decaying response (10 ps-1 ns) owing to excited-state population. A copolymer of silicon phthalocyanine and methyl methacrylate exhibits a fast recovery time (15 ps) and no observable long-time (∼ns) component of its nonlinear response, as well as an absorption band twice as narrow as that of guest/host samples of the same material.
Original language | English (US) |
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Pages (from-to) | 295-297 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 60 |
Issue number | 3 |
DOIs | |
State | Published - 1992 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)