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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Triply resonant enhancement of third-order nonlinear optical susceptibility in compositionally asymmetric coupled quantum wells

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71008

    Title: Triply resonant enhancement of third-order nonlinear optical susceptibility in compositionally asymmetric coupled quantum wells
    Authors: Chenhsin Lien;Yimin Huang;Junfu Wang
    教師: 連振炘
    Date: 1994
    Publisher: American Institute of Physics
    Relation: Journal of Applied Physics, American Institute of Physics, Volume 76, Issue 2, Jul 1994, Pages 1008 - 1012
    Keywords: BAND
    Abstract: The third-order nonlinear optical susceptibility chi(3)(3omega) due to the intersubband transitions in the four-level AlInAs/GaInAs compositionally asymmetric coupled quantum well (CACQW) is investigated theoretically. The subband eigenenergy E(n) of the CACQW structure could be designed to form an equally spaced energy-level ladder. Since the eigenenergy spacing could be designed to resonate with the pumping source, the third-order nonlinear optical susceptibility could be greatly enhanced through the triple resonance. Based on the theoretical calculations, a magnitude of \chi(3)(3omega)\ as high as 2.2 X 10(5) (nm/V)2 can be achieved for the CACQW structure. This is a more than eight orders of magnitude enhancement as compared to that of the bulk value in GaAs. In addition to the design of CACQW structure, the triple resonance can also be achieved by biasing the CACQW under a proper electric field due to the large Stark effect of the CACQW structure.
    Relation Link: http://www.aip.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71008
    Appears in Collections:[電機工程學系] 期刊論文

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