Article
Optics
Bong-Rim Shin, Se-In Kim, Dongwook Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, In Cheol Yu, Fabian Rotermund, O-Pil Kwon
Summary: A new pi-conjugated cationic chromophore based on phenolic N-pyrimidinyl stilbazolium and its non-centrosymmetric crystals are reported in this study. The chromophore exhibits large molecular optical nonlinearity and co-existence in solution, while displaying a macroscopic second-order nonlinear optical response in the crystalline state.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Polymer Science
Yifan Xu, Rui Zu, Neela H. Yennawar, Venkatraman Gopalan, Robert J. Hickey
Summary: Tailored polymer materials with high-glass transition temperatures, cross-linked matrices, and strong intermolecular interactions containing electric-field poled nonlinear optical (NLO) chromophores are promising for applications in optical telecommunication, high-performance computing, and data transmission. An alternative approach is introduced in which a NLO chromophore is cocrystallized with a polymer, forming a noncentrosymmetric hybrid host-guest complex, creating materials exhibiting second harmonic generation (SHG) properties. The innovative method involves aligning and maintaining a cocrystalline domain orientation through the formation of hybrid host-guest complexes to impart SHG properties.
Article
Chemistry, Multidisciplinary
Xiaocong Deng, Kai Wang, Qianqian Li, Zhen Li
Summary: This study proposes a new approach to design second-order nonlinear optical polymer networks through in situ thermal crosslinking. The networks exhibit excellent optical performance and stability after in situ poling and thermal crosslinking.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Review
Multidisciplinary Sciences
Jiaxin Liu, Wenbo Wu
Summary: Organic/polymeric second-order nonlinear optical (NLO) materials have played a significant role in laser technology and optical fiber communication, but the intermolecular electrostatic interactions limit their efficiency. Dendrimers and hyperbranched polymers have been proposed as better alternatives for highly efficient NLO materials. Dendronized hyperbranched polymers (DHPs) have shown many advantages in the NLO field, such as easy synthesis, large NLO coefficients, and high orientation stability.
Article
Chemistry, Applied
Shan He, Zhiwei Liang, Xunyu Chen, Ziying Zeng, Lei Shi, Zelin Huang, Shumin Zhang, Xinhua Geng, Fenggang Liu, Jiahai Wang
Summary: In this study, the synthesis of nonlinear optical dendrimers with multichromophores was investigated. It was found that the dendritic structure, along with the identical donor bridge and strong acceptor, significantly improved the poling efficiency and thermal stability of the chromophores.
Article
Optics
Karolina Waszkowska, Pierre Josse, Clement Cabanetos, Philippe Blanchard, Bouchta Sahraoui, Dominique Guichaoua, Igor Syvorotka, Olha Kityk, Robert Wielgosz, Patrick Huber, Andriy Kityk
Summary: The study demonstrates that a reliable and accessible tool for designing materials with nonlinear meta-optics can be achieved by combining large-scale, self-organized nanoporosity in monolithic solids with confinement-controllable orientational order of chromophores.
Article
Chemistry, Multidisciplinary
Huajun Xu, Yanna Sun, Yuanyuan Kan, Ke Gao
Summary: This review summarizes the strategies to improve the electro-optic activity of organic materials and highlights recent progress in the design of high-performance OEO materials. It also discusses the challenges that need to be addressed in the application of current OEO materials.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Nitesh Tamang, Prajal Chettri, Bishnu P. Joshi, Swayamsiddha Kar, Vaibhav Mahendrakar, Shailesh Srivastava, Nageswara Rao Golakoti
Summary: By synthesizing and characterizing fullerene derivatives of bischalcones with different cycloalkanone ring sizes, the impact of ring size and substituents on the aryl rings on the nonlinear optical properties was investigated. The application of Claisen-Schmidt condensation reaction and analytical techniques such as UV-Vis, FT-IR, 1H NMR, 13C NMR, and mass spectrometry helped identify compound characteristics. Among the synthesized compounds, 2,6-bis-(4-methoxydibenzylidene)acetone exhibited the highest second harmonic generation efficiency and 2,6-bis-(4-methylthiobenzylidene)cyclopentanone showed the highest third-order nonlinear optical property.
Article
Materials Science, Multidisciplinary
Lingxiao Song, Hui Zhang, Xiaoyu Shi, Jie Zhang, Kexin Wang, Ji Zhang, Ming Li, Yuhui Ao
Summary: Two novel second-order nonlinear optical (NLO) chromophores containing the thieno [2,3-b] indole (TI) group as a novel electron-donor were synthesized and investigated. These TI-based chromophores showed high thermal stability and good NLO activity. The chromophore A5 exhibited a narrow energy gap and large hyperpolarizability (beta) according to Density functional theory (DFT) calculations.
Article
Physics, Multidisciplinary
Zijing Jiang, Qun Ding
Summary: In recent years, side-channel analysis technology poses a significant threat to information security by decrypting key information in encryption devices. The XOR operation leakage, proposed by linear regression, has typical representation in side-channel analysis. However, linear regression encounters the problems of irreversibility in the singular matrix during the template analysis and poor data fit in the template analysis after cryptographic algorithm masking. To address these issues, this paper proposes a second-order template analysis method based on orthogonal transformation nonlinear regression. Through orthogonal transformation and adding a negative direction to the regression coefficient matrix calculation, the problems of singular matrix irreversibility and model inaccuracy are solved. Experimental results on SAKURA-G demonstrate that the second-order template analysis based on orthogonal transformation nonlinear regression achieves key recovery without sacrificing regression estimation performance and exhibits good universality in high noise and high-order template analysis conditions.
Article
Materials Science, Multidisciplinary
Mengke Wang, Yixin Chen, Shengpeng Zhang, Lianghai Dong, Hao Yao, Huajun Xu, Kaixin Chen, Jieyun Wu
Summary: Emerging technologies, such as artificial intelligence (AI) and big data, are driving the exponential growth of data traffic in fiber-optic communication networks. Electro-optic (EO) modulators, utilizing the electro-optic effect, have emerged as promising candidates for high-speed and high-efficiency optical transceivers. Pockels electro-optic materials, including organic poled polymers and inorganic thin-film lithium niobate, have unique material properties that make them suitable for achieving high-speed and high-efficiency EO modulation.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Li Wang, Yan-Li Liu, Quan-Jiang Li, Di He, Sheng-Hui Chen, Mei-Shan Wang
Summary: The correlation between intermolecular interaction and second-order nonlinear optical (NLO) properties was investigated by studying a molecular tweezer with corannulene substituents linked by a tetrahydro[5]helicene imide. Density functional theory was employed to study the geometric structure, molecular orbitals, intermolecular interactions, electron absorption spectra, and second-order NLO properties of the charge-transfer complexes formed by the molecular tweezers and C-60/C-70.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Optics
Fateh Ullah, Niping Deng, Feng Qiu
Summary: The rapid development of electro-optic polymers in envisioning second-order nonlinear optics and waveguiding is driven by practical applications. Modern synthetic strategies have led to improved optical quality and enhanced properties of amorphous polymers. Significant progress has been made in understanding their implementation, but challenges such as temporal stabilities still exist.
Article
Optics
Lu Han, Zhan Li, Chao Chen, Xin Sun, Junyong Zhang, Dean Liu
Summary: This paper proposes a method to modulate the polarization states of higher-order Poincare beams using Mach-Zehnder interferometers and nonlinear optical crystals. The polarization state of the beams can be controlled by applying a voltage signal on electro-optic crystals, allowing for direct and immediate switching.
Article
Chemistry, Physical
Thamodharan Viswanathan, Mohan Gopalakrishnan, Krishnan Thirumoorthy, Muthuramalingam Prakash, Nallasamy Palanisami
Summary: A new eight-membered centrosymmetric ferrocenyl borasiloxane FcBSi (1) and its pyridine adduct FcBSiPy (2) were synthesized and characterized. Both compounds exhibit negative solvatochromism in nonpolar to polar solvents due to dipole interactions. DFT calculations and NLO studies support the optical and NLO properties of FcBSi (1) and FcBSiPy (2).
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
