
Proceedings Paper
Optical limiting properties of two novel porphyrin dimersFormat | Member Price | Non-Member Price |
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Paper Abstract
We report on our investigations of the third order optical properties of two novel prophyrin dimers and their optical
limiting behaviors. Our experiments were performed by using single beam z-scan technique and with Q-switched Nd:
YAG nanosecond laser pulses at 532nm and CW laser at 532nm respectively for two different optical limiting
mechanisms, strong excited state absorption (ESA) and thermal self-defocusing. In the experiments with pulsed laser, the
open aperture results indicated that the two dimers showed strong excited state absorption which occurs when the excited
state has an absorption cross-section higher than that of ground state. In the experiments with CW laser, optical limiting
behaviors have also been observed. In this case, the third order optical nonlinearitiy is caused by thermal self-defocusing
mechanism. Our results indicated that both novel prophyrin dimers showed potential use in optical limiters, optical
switches and optical modulators.
Paper Details
Date Published: 4 January 2008
PDF: 5 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 683903 (4 January 2008); doi: 10.1117/12.759633
Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)
PDF: 5 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 683903 (4 January 2008); doi: 10.1117/12.759633
Show Author Affiliations
Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)
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