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Proceedings Paper

Solvent effect on optical limiting of zinc tetrabenzoporphyrin compounds
Author(s): Brian R. Kimball; Masato Nakashima; Barry S. DeCristofano; N.K.M. Naga Srinivas; P. Premkiran; Desai Narayana Rao; Appaji Panchangam; Devulapalli V. G. L. N. Rao
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Paper Abstract

We carried out systematic experiments to study the effect of solvents on power limiting in zinc meso-tetra (p- methoxyphenyl) tetrabenzoporphyrin (ZnTBP). We used Toluene, pyridine, acetone, dichloromethane (DCM) and a toluene pyridine mixture to evaluate polarity and complex formation of the solvent and solute molecules. Z-scan data were generated using picosecond and nanosecond laser pulses at 532 nm. These data were then curvefit to a 5-level model to obtain excited state and two photon absorption coefficients, and the intersystem crossing rates. An f/5 optical limiting setup was used to determine limiting thresholds. Results indicate that toluene and DCM give the lowest limiting thresholds and that pyridine ligation can be used as a means of molecular modification for future molecular studies.

Paper Details

Date Published: 29 November 2000
PDF: 8 pages
Proc. SPIE 4106, Linear, Nonlinear, and Power-Limiting Organics, (29 November 2000); doi: 10.1117/12.408513
Show Author Affiliations
Brian R. Kimball, U.S. Army Soldier and Biological Chemical Command (United States)
Masato Nakashima, U.S. Army Soldier and Biological Chemical Command (United States)
Barry S. DeCristofano, U.S. Army Soldier and Biological Chemical Command (United States)
N.K.M. Naga Srinivas, Univ. of Hyderabad (India)
P. Premkiran, Univ. of Hyderabad (India)
Desai Narayana Rao, Univ. of Hyderabad (India)
Appaji Panchangam, Univ. of Massachusetts/Boston (United States)
Devulapalli V. G. L. N. Rao, Univ. of Massachusetts/Boston (United States)

Published in SPIE Proceedings Vol. 4106:
Linear, Nonlinear, and Power-Limiting Organics
Manfred Eich; Christopher M. Lawson; Mark G. Kuzyk; Manfred Eich; Mark G. Kuzyk; Christopher M. Lawson; Robert A. Norwood, Editor(s)

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