Investigation of relationship between chemical structures and optical limiting properties of pentaazadentate porphyrin-like metal complexes

Wenfang Sun, Clare C. Byeon, Michael M. McKerns, Gary M. Gray, Duoyuan Wang, Chris M. Lawson

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations

Abstract

The optical limiting performances of nine asymmetric pentaazadentate porphyrin-like metal complexes ([(R-APPC)M]Cln) have been measured at 532nm with nanosecond pulses. In a f/38 geometry, with sample transmission of 0.51 ∼ 0.80 in a 2 mm cell, the limiting thresholds for these complexes were 1.4 ∼ 150.0 mJ/cm2. The throughputs of these complexes were limited to 0.31 ∼ 1.42 J/cm2 for incident fluences as high as 3.5 J/cm2. The limiting throughput was strongly influenced by the nature of the ligand and metal ions. Lower bounds for the ratio of triplet excited-state to ground state absorption cross sections have been estimated at 2.3 ∼ 5.7. The lower limiting thresholds, lower limiting throughputs, as well as the ease of modification of the ligands and variation of the metal ions, make these complexes promising candidates for optical power limiters.

Original languageEnglish
Pages (from-to)127-134
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3472
DOIs
StatePublished - 1998
EventNonlineair Optical Liquids for Power Limiting and Imaging - San Diego, CA, United States
Duration: 22 Jul 199822 Jul 1998

Keywords

  • Absorption cross section
  • Asymmetric pentaazadentate porphyrin-like metal complexes
  • Limiting threshold
  • Limiting throughput
  • Optical limiting
  • Reverse saturable absorption (RSA)
  • Triplet excited-state

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