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  1. No Access

    Article

    Theoretical Studies on the Second Hyperpolarizabilities of Trithiapentalene and Its Donor and Acceptor Disubstituted Species

    We study the third-order optical nonlinearity for some interesting ϖ-conjugated systems involving sulfur (S) atoms. The static second hyperpolarizabilities (γ) for l, 6, 6a-trithiapentalene and its donor-and a...

    Masayoshi Nakano, Satoru Yamada, Kizashi Yamaguchi in Optical Review (1999)

  2. No Access

    Article

    Quantum Phase Dynamics of Interaction between Photon Field and Magnetic System: Effects of Magnetic Quantum Tunnelling

    We investigate the dynamics of probability distributions of an initially one-mode coherent field interacting with a four-state molecular system, which is a single magnet with a tunneling across an anisotropic ...

    Hidemi Nagao, Masayoshi Nakano, Yasuteru Shigeta, Kizashi Yamaguchi in Optical Review (1999)

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    Article

    Theoretical Study on the Second Hyperpolarizabilities for Small Radical Systems

    We study the second hyperpolarizabilities (ɣ) for anion, neutral and cation radicals and find that magnitudes of ɣ (| ɣ |) of the radicals are sensitively influenced by features of each charged state. It is al...

    Satoru Yamada, Masayoshi Nakano, Masamichi Nishino, Kizashi Yamaguchi in Optical Review (1999)