Journal
OPTICS EXPRESS
Volume 17, Issue 21, Pages 18478-18488Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.018478
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Funding
- National Science Foundation [DMR-0120967]
- ONR [N00014-04-0095, N00014-06-1-0897]
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A lead bis(ethynyl) porphyrin polymer possesses strong nonlinear absorption with unprecedented spectral/temporal coverage as a result of broad, overlapping two-photon and excited-state absorption bands with favorable excited-state dynamics. Consequently, this material exhibits effective optical limiting over a range of about 500 nm in the near infrared (ca. 1050 - 1600 nm) and for laser pulsewidths spanning from 75 fs to 40 ns. Introduction of the material in a waveguide device geometry results in a strong optical limiting response. (c) 2009 Optical Society of America
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