Synthesis, Characterization and Investigation of the Third Order Nonlinear Optical Properties of Pyrrole Schiff Bases

Sivan Velmathi; Vijayaraghavan Reena

doi:10.4028/www.scientific.net/AMR.488-489.377

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 488-489Synthesis, Characterization and Investigation of...

Synthesis, Characterization and Investigation of the Third Order Nonlinear Optical Properties of Pyrrole Schiff Bases

Abstract:

We have investigated the third order nonlinear optical properties of pyrrole Schiff bases synthesized by condensing pyrrole-2-carboxaldehyde with two different diamines. The nonlinear optical measurements were performed using the nano- second laser pulses at 532nm wavelengthby employing the Z-scan technique. The Z- scan spectra reveal a large negative non-linear refraction co-efficient .The nonlinear refractive index was found to be of the order of 10 ^-14cm2/W and the magnitude of third order susceptibility was of the order of 10 ^-13esu. These compounds exhibit good optical power limiting property under nano-second regime and TPA (Two Photon Absorption) is the dominating process leading to the non-linear behavior.

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Periodical:

Advanced Materials Research (Volumes 488-489)

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377-382

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https://doi.org/10.4028/www.scientific.net/AMR.488-489.377

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Online since:

March 2012

Authors:

Sivan Velmathi, Vijayaraghavan Reena

Keywords:

Negative Third Order Non Linearity, Optical Power Limiting, Schiff-Base, Z-Scan Method

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