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Proceedings Paper

Ultrafast nonlinear optical studies of 3,8,13,18-Tetrachloro-2,7,12,17-tetramethoxyporphyrin and its derivatives
Author(s): Debasis Swain; Anup Rana; Pradeepta K. Panda; S. Venugopal Rao
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Paper Abstract

Recently we synthesized 3,8,13,18-tetrachloro-2,7,12,17-tetramethoxyporphyrin and its metallo-derivatives [1]. The free-base molecule is unique owing to the presence of an electron donating methoxy group and electron withdrawing chloro group on the adjacent β- positions of each pyrrole moiety. We could synthesize these molecules through two different routes; the first route provided pure isomer, albeit in low yield, whereas the second route provided mixture of isomers with higher yield [1]. Herein we report the third-order nonlinear optical properties of these porphyrins obtained from Z-scan measurements using ~40 fs, 800 nm pulses. Open aperture data confirmed the presence of saturable absorption whereas the closed aperture data indicated a positive nonlinearity. We have compared the data of the pure isomer with that of the mixture of isomers.

Paper Details

Date Published: 20 February 2012
PDF: 9 pages
Proc. SPIE 8258, Organic Photonic Materials and Devices XIV, 82581B (20 February 2012);
Show Author Affiliations
Debasis Swain, Univ. of Hyderabad (India)
Anup Rana, Univ. of Hyderabad (India)
Pradeepta K. Panda, Univ. of Hyderabad (India)
S. Venugopal Rao, Univ. of Hyderabad (India)

Published in SPIE Proceedings Vol. 8258:
Organic Photonic Materials and Devices XIV
Christopher Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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