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學術出版;;Publications

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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Lai, CMHas files: No

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Now showing 1 - 3 of 3
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    Item type:Item,
    Squeezed light and its photocurrent fluctuations
    (1996)
    Meng, HF
    ;
    Lai, CM
    ;
    物理研究所
    ;
    Institute of Physics
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    Item type:Item,
    Bipolaron-induced third-order optical nonlinearity in conjugated conducting polymers
    (1996-12-15)
    Lai, CM
    ;
    Meng, HF
    ;
    電子物理學系
    ;
    物理研究所
    ;
    Department of Electrophysics
    A mechanism, due to the presence of bipolarons, for large resonant chi((3)) in doped cis-polyacetylene and other conjugated conducting polymers is presented. Under optical pumping, the electronic occupations of the two intragap energy levels of the bipolarons will vary, resulting in a shift in their energies, which in turn causes a dramatic change in the absorption spectrum. Even for moderate doping concentrations of bipolarons, chi((3)) is found to be as high as 10(-8) esu.
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    Item type:Item,
    Translationally invariant polarons in conjugated conducting polymers
    (1997-05-15)
    Meng, HF
    ;
    Lai, CM
    ;
    電子物理學系
    ;
    物理研究所
    ;
    Department of Electrophysics
    A simple effective Hamiltonian for the electron-phonon coupling in the conjugated polymers is derived from the Su-Schrieffer-Heeger model with quantized lattice motions. Phonons correspond to lattice quantum fluctuations around the dimerized positions. Both acoustic and optical modes are considered. The energy-momentum relation for the polaron is calculated variationally, with the aid of Lee-Low-Pines transformation. The discrete translational invariance of an ideal conjugated polymer is. explicitly enforced. Analytical expression for the polaron effective mass m* is obtained. m* turns out to be, in general, much larger than the conduction-band effective mass.