A [111]-Cut Si Hemisphere Two-Photon Response Photodetector
LIU Xiu-Huan1, CHEN Zhan-Guo2**, JIA Gang2, WANG Hai-Yan1, GAO Yan-Jun2, LI Yi1
1College of Communication Engineering, Jilin University, Changchun 130012 2State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012
A [111]-Cut Si Hemisphere Two-Photon Response Photodetector
LIU Xiu-Huan1, CHEN Zhan-Guo2**, JIA Gang2, WANG Hai-Yan1, GAO Yan-Jun2, LI Yi1
1College of Communication Engineering, Jilin University, Changchun 130012 2State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012
摘要Properties of two-photon response in a [111]-cut nearly-intrinsic Si hemisphere photodetector are studied. The measured photocurrent of the photodetector responding to the 1.32 µm continuous wave laser shows a quadratic dependence on the coupled optical power and is saturated with the bias voltage. Also, the photocurrent is independent of polarization. Such properties are in good agreement with the theory of two−photon absorption. The isotropic photocurrent generated from the [111]-cut Si hemisphere is compared to the anisotropic one induced in the [110]-cut Si sample and the ratio of χxxxx /χxxyy for silicon performing at 1.32 µm is calculated to be 2.4 via the fitted function of the anisotropic photocurrent from the [110]-cut sample.
Abstract：Properties of two-photon response in a [111]-cut nearly-intrinsic Si hemisphere photodetector are studied. The measured photocurrent of the photodetector responding to the 1.32 µm continuous wave laser shows a quadratic dependence on the coupled optical power and is saturated with the bias voltage. Also, the photocurrent is independent of polarization. Such properties are in good agreement with the theory of two−photon absorption. The isotropic photocurrent generated from the [111]-cut Si hemisphere is compared to the anisotropic one induced in the [110]-cut Si sample and the ratio of χxxxx /χxxyy for silicon performing at 1.32 µm is calculated to be 2.4 via the fitted function of the anisotropic photocurrent from the [110]-cut sample.
LIU Xiu-Huan;CHEN Zhan-Guo**;JIA Gang;WANG Hai-Yan;GAO Yan-Jun;LI Yi
. A [111]-Cut Si Hemisphere Two-Photon Response Photodetector[J]. 中国物理快报, 2011, 28(11): 114202-114202.
LIU Xiu-Huan, CHEN Zhan-Guo**, JIA Gang, WANG Hai-Yan, GAO Yan-Jun, LI Yi
. A [111]-Cut Si Hemisphere Two-Photon Response Photodetector. Chin. Phys. Lett., 2011, 28(11): 114202-114202.
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2011, Vol. 28 
