中国物理B ›› 2010, Vol. 19 ›› Issue (6): 64213-064213.doi: 10.1088/1674-1056/19/6/064213

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Study of second-order nonlinear hyperpolarisability of all-trans-β-carotene in solutions by linear spectroscopic technique

门志伟1, 曲冠男1, 杨光1, 里佐威1, 高淑琴1, 陆国会1, 孙成林2, 房文汇3   

  1. (1)College of Physics, Jilin University, Changchun 130021, China; (2)State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130021, China; (3)State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130021, China;College of Physics, Jilin University, Changchun 130021, China
  • 收稿日期:2009-05-04 出版日期:2010-06-15 发布日期:2010-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Gant Nos.~10774057 and 10974067).

Study of second-order nonlinear hyperpolarisability of all-trans-$\beta$-carotene in solutions by linear spectroscopic technique

Fang Wen-Hui(房文汇)a)b), Men Zhi-Wei(门志伟) b), Sun Cheng-Lin(孙成林)a) Qu Guan-Nan(曲冠男)b), Yang Guang(杨光)b), Li Zuo-Wei(里佐威)a)b),Gao Shu-Qin(高淑琴) b), and Lu Guo-Hui(陆国会)b)   

  1. a State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130021, China; b College of Physics, Jilin University, Changchun 130021, China
  • Received:2009-05-04 Online:2010-06-15 Published:2010-06-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Gant Nos.~10774057 and 10974067).

摘要: This paper demonstrates the second-order nonlinear hyperpolarisability \gamma of all-trans-β-carotene in different solvents by linear spectroscopic technique that is based on resonance Raman scattering and UV--VIS (Ultraviolet-visible) absorption spectroscopy. Owing to the two-level model well describing the link that exists between the resonance Raman scattering and stimulated Raman scattering, the stimulated Raman polarisability α_{\rm R} can be calculated through the two-photon resonance system. The value of \gamma of all-trans-β-carotene in carbon bisulfide solution is 6.435\times 10^{-33} esu (1~esu of resistance =8.98755\times10^{11}~\Omega) that is close to the true value, because the solution of all-trans-β-carotene in carbon bisulfide satisfies the rigid resonance Raman scattering condition. This method is expected to be worthy of applications to measure the second-order nonlinear hyperpolarisability of a conjugate organic molecule.

Abstract: This paper demonstrates the second-order nonlinear hyperpolarisability $\gamma$  of all-trans-$\beta$-carotene in different solvents by linear spectroscopic technique that is based on resonance Raman scattering and UV--VIS (Ultraviolet-visible) absorption spectroscopy. Owing to the two-level model well describing the link that exists between the resonance Raman scattering and stimulated Raman scattering, the stimulated Raman polarisability $\alpha_{\rm R}$ can be calculated through the two-photon resonance system. The value of $\gamma$  of all-trans-$\beta$-carotene in carbon bisulfide solution is $6.435\times 10^{-33}$ esu (1 esu of resistance = $8.98755\times10^{11}~\Omega$) that is close to the true value, because the solution of all-trans-$\beta$-carotene in carbon bisulfide satisfies the rigid resonance Raman scattering condition. This method is expected to be worthy of applications to measure the second-order nonlinear hyperpolarisability of a conjugate organic molecule.

Key words: all-trans-$\beta$-carotene, second-order nonlinear hyperpolarisability, rigid resonance Raman scattering, UV--VIS absorption spectroscopy

中图分类号: 

  • 78.30.Cp
78.40.Dw (Liquids) 61.25.Em (Molecular liquids)