[1] [1] ESAKI L, TUS R. Superlattice and negative differential differential conductivity in semiconductors［J］. IBM Journal of Research and Development, 1970, 14(1): 6165.

[2] [2] GUO Kangxian. Influence of electronconfined phonon interaction on thirdorder optical nonlinearity in a quantum wire with parabolic potential［J］. Solid State Communications, 1997, 103(4): 255258.

[3] [3] NAIR S V, TAKAGAHARA T. Theory of exciton pair states and their nonlinear optical properties in semiconductor quantum dots［J］. Physical Review B, 1997, 55(8): 51535170.

[4] [4] GMEZ D E, VERNON K C, MULVANEYP, et al. Surface plasmon mediated strong excitionphoton coupling in semiconductor nanocrystals［J］. Nano Letters, 2010, 10(1): 274278.

[5] [5] REISS P, CARAYON S, BLEUSE J, et al. Low polydispersity core/shell nanocrystals of CdSe/ZnSe and CdSe/ZnSe/ZnS type: preparation and optical studies［J］. Synthetic Metals, 2003, 139(3): 649652.

[6] [6] GERDOVA I, HACH A. Thirdorder nonlinear spectroscopy of CdSe and CdSe/ZnS core shell quantum dots［J］. Optics Communications, 2005, 246(13): 205212.

[7] [7] SCHOOSS D, MEWS A, EYCHMüLLER A, et al. Quantumdot quantum well CdS/HgS/CdS: Theory and experiment［J］. Physical Review B, 1994, 49(24): 1707217078.

[8] [8] GONG Shaohua, FU Jun, FU Yunliang, et al. Investigation on stimulated photon echo induced by optical transition of 1Se1Sh excitions in coreshell CdSe/ZnS quantum dotquantum well［J］. Acta Photonica Sinica, 2012, 41(1): 5459.

[9] [9] ZHANG Dangwei, ZHANG Jingwen, HOU Xun. Superlattice using dynamical theory and kinematical theory of Xray diffraction［J］. Acta Photonica Sinica, 2002, 22(3): 135138.

[10] [10] ZHANG Xi, XIONG Guiguang, FENG Xiaobo. Well widthdependent thirdorder optical nonlinearities of a ZnS/CdSe cylindrical quantum dot quantum well［J］. Physica E, 2005, 33(1): 120124.

[11] [11] CHEN Cheng, PENG Xuefeng, YAN Jinhua. Study on photoluminescence spectra of a (CdSe/ZnS) quantumdot doped fiber in low doped concentrations［J］. Acta Photonica Sinica, 2009, 38(7): 17511756.

[12] [12] ZHU Dequan, XIN Yu, ZHANG Lihua. Parametric relative properties of thirdorder nonlinear optical susceptibilities in a CdSe/ZnS coreshell spherical quantum dot［J］. Journal of Spectroscopy Laboratory, 2011, 28(3): 13271330.

[13] [13] TAKAGAHARA T. Biexciton states in semiconductor quantum dots and their nonlinear optical properties［J］. Physical Review B, 1989, 39(14): 1020610231.

[14] [14] ROSENCHER E, BOIS P H. Model system for optical nonlinearities: asymmetric quantum wells［J］. Physical Review B, 1991, 44(20): 1131511327.