Novel D-π-A-π-D type organic chromophores for second harmonic generation and multi-photon absorption applications

Pusala, Aditya; Kumar, Harish; Kumar, Sunil; Rajashekar,; Muralikrishna, M.; Muthukumar, V. Sai; Kumar, Bharath S.; Sai, S. Siva Sankara; Rao, Guo‐Wu

doi:10.1063/1.4810445

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2016

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“…Dibenzylideneacetone derivatives were reported to possess good TPA properties [ 21 , 22 ]. Furthermore, dibenzylideneacetone-based isomers exhibit different TPA and OL performances experimentally.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Substituent Position on the Two-Photon Absorption Performances of Dibenzylideneacetone-Based Isomers

Zhao

Zhang

et al. 2016

Materials

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The two-photon absorption and optical limiting properties of two dibenzylideneacetone derivatives with different substituent positions have been theoretically investigated by solving the coupled rate equations-field intensity equation in the nanosecond time domain using an iterative predictor-corrector finite-difference time-domain method. The calculations show that the electronic structure, the transition dipole moment, the energy gap between the highest occupied orbital (HOMO) and the lowest unoccupied orbital (LUMO), and the pumping rate for the two molecules are quite different due to the different position of chlorine atoms. Importantly, two-photon absorption and optical limiting properties of the molecules depend crucially on the substituent positions of the terminal group, indicating that subtle manipulation on the molecule can affect the nonlinear optical properties of the medium.

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Section: Introductionmentioning

confidence: 99%