Abstract
We report results from the investigation of the nonlinear refractive index and nonlinear absorption coefficient of {(1Z)-[4-(Dimethylamino)phenyl]methylene} 4-nitrobenzocarboxy hydrazone mono-hydrate (DMPM4NBCHM) solution using Z-scan technique with a continuous wave (CW) Argon ion laser. The results show that this type of organic material has a large nonlinear absorption and nonlinear refractive index at 488 nm and 514 nm. The origin of the nonlinear effects was discussed. We demonstrate that the light induced nonlinear refractive index variation, leads to limiting effect. The results indicated that DMPM4NBCHM could be promising candidates for application on nonlinear photonic devices and optical limiters.
Highlights
The variation of optical properties of materials induced by high intensity light is divided into light in-How to cite this paper: Henari, F.Z. and Patil, P.S. (2014) Nonlinear Optical Properties and Optical Limiting Measurements of {(1Z)-[4-(Dimethylamino)Phenyl]Methylene} 4-Nitrobenzocarboxy Hydrazone Monohydrate under continuous wave (CW) Laser Regime
The light induced absorption changes are commonly describe by α = αo + βI, where α is linear absorption coefficient; I is the intensity of the light and β is a nonlinear absorption coefficient
We report the experimental measurements of nonlinear refractive index and the nonlinear absorption of DMPM4NBCHM solution with continuous wave (CW) argon ion laser at 488 nm and 514 nm using the Z-scan technique [15]
Summary
The variation of optical properties of materials induced by high intensity light is divided into light in-How to cite this paper: Henari, F.Z. and Patil, P.S. (2014) Nonlinear Optical Properties and Optical Limiting Measurements of {(1Z)-[4-(Dimethylamino)Phenyl]Methylene} 4-Nitrobenzocarboxy Hydrazone Monohydrate under CW Laser Regime. The light induced absorption changes are commonly describe by α = αo + βI, where α is linear absorption coefficient; I is the intensity of the light and β is a nonlinear absorption coefficient This coefficient contains interesting nonlinear optical effects such as: Reverse Saturation Absorption (RSA), Two Photon Absorption (TPA), and Saturation Absorption (SA). The light induced refractive index changes are described by the relationship n = no + n2I, where no is the linear refractive index; I is the intensity of the light and n2 is a nonlinear refractive index coefficient This coefficient is an effective parameter that contains many interesting nonlinear optical effects, such as laser induced grating, soliton pulse propagation in waveguides [1] [2], optical switching [3]-[6] self-focusing, self-defocusing, self-phase modulation, self diffraction, optical bistability and optical limiting [7]-[11]
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