Wavelength-resolved nonlinearity on triazole-quinone derivatives

Raul Rangel-Rojo; Hiro Matsuda; K. Kimura; Miguel Angel Mendez-Rojas; William H. Watson

doi:10.1117/12.502502

10 November 2003 Wavelength-resolved nonlinearity on triazole-quinone derivatives

Raul Rangel-Rojo, Hiro Matsuda, K. Kimura, Miguel Angel Mendez-Rojas, William H. Watson

Proceedings Volume 5212, Linear and Nonlinear Optics of Organic Materials III; (2003) https://doi.org/10.1117/12.502502
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We present a wavelength-resolved study of the third-order nonlinearity of two derivatives of the 2-amino-1,2,3 triazole-quinone molecule. The substitution groups are a dialkylaminophenyl in one case, and ferrocene in the other, and both samples were prepared as chloroform solutions. The z-scan technique with a tunable 10 ps laser source was used to resolve the absorptive and refractive contributions to the nonlinearity at several wavelengths near resonance. In the case of the ferrocene derivative, the nonlinear response is attributed to the metal-ligand charge transfer that gives rise to the absorption spectrum features. The absorptive contribution changes from saturable to two-photon absorption going away from resonance, vanishing at λ=540 nm, while the nonlinear refractive index n₂ remains finite. This is important for possible applications based on nonlinear refractive effects. For the dialkylaminophenyl derivative, a complex combination of saturable and induced absorption is observed at several wavelengths, becoming induced absorption closer to resonance and weak saturable absorption away from resonance. For both samples the nonlinear refractive index remains positive throughout the spectral range investigated.

Citation Download Citation

Raul Rangel-Rojo, Hiro Matsuda, K. Kimura, Miguel Angel Mendez-Rojas, and William H. Watson "Wavelength-resolved nonlinearity on triazole-quinone derivatives", Proc. SPIE 5212, Linear and Nonlinear Optics of Organic Materials III, (10 November 2003); https://doi.org/10.1117/12.502502

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