| 溶胶CdS毫微晶的双光子吸收及其量子尺寸效应 |
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| 引用本文： | 沈琪敏,梁培辉.溶胶CdS毫微晶的双光子吸收及其量子尺寸效应[J].光学学报,1991,11(8):684-687. |
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| 作者姓名： | 沈琪敏 梁培辉 |
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| 作者单位： | 中国科学院上海光学精密机械研究所，中国科学院上海光学精密机械研究所 上海 201800，上海 201800 |
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| 摘 要： | 本文利用单光束透过率法研究了溶胶CdS毫微晶的双光子吸收。对于毫微晶尺寸为5.5～11.0nm的样品,测得其在波长510.6nm时的双光子吸收系数为1.31～5.24/GW,并由此得到相应的x~(3)为2.8×10~(-12)～1.1×10~(-11)esu。文中还从理论上分析了CdS溶胶的双光子吸收与毫微晶尺寸的关系,理论计算与实验结果基本符合。
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| 关 键 词： | CdS毫微晶 双光子吸收 量子尺寸效应 |
| 收稿时间： | 1990/12/12 |
Two-photon absorption and quantum size effect in colloidal CdS microcrystallites |
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| SHEN QIMIN AND LIANG PEIHUI.Two-photon absorption and quantum size effect in colloidal CdS microcrystallites[J].Acta Optica Sinica,1991,11(8):684-687. |
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| Authors: | SHEN QIMIN AND LIANG PEIHUI |
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| Abstract: | The two-photon absorption (TPA) of colloidal CdS semiconductor microerystai-lites has been studied by using a single-beam transmission technique. For different crystallite sizes of 5.5～11.0nm, the TPA coefficients of 1.31 to 5.24cm/GW are measured and the corresponding x(3) of 2.8×10-12 to 1.1×10-11 esu are obtained at wavelength of 510.6nm. The dependence of crystallite size on TPA has been analysed, and the theoretical prediction is in agreement with the experimental result. |
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| Keywords: | CdS miororystallites two photon absorption quantum size effect |
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