title: Photoelectron transport tuning of self-assembled subbands.
abstract: Conventionally, electrical transport of quantum subbands occurs at very high electric fields, indicating that the medium is easy to break down. In the experiments and practical applications, the extreme condition is difficult to satisfy. For quantum information transmission, low power consumption and convenient implementation are what we expect. In this paper, we engineered a special quantum dot array (QDA) embedded in a single crystal matrix. By external optical field excitation, we found a series of subbands made of the self-assembled QDA discretely located in the matrix. Changing the spacing between the quantum dots leads to the variation of subband spacing. Artificially manipulating the microcosmic QDA system can bring interesting macroscopic effects, such as an enhanced absorption intensity in the ultraviolet range, a blue-shift of the surface plasmon resonance peak and nonlinear absorption changed from two-photon absorption to saturated absorption. The intrinsic mechanism of the subband optical response was revealed due to the strong quantum confinement effect and dominant intraband transitions. The weak surface plasmon resonance absorption of Ni QDA gave an excellent figure of merit of the order of 10(-10). The composite films are expectation enough to become a prime candidate for nonlinear applications near 532 nm. Therefore with interplay of the weak optical field and subbands, we achieved a tunable photoelectron transport process.
authors: Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, CAEP, Southwest University of Science and Technology, Mianyang 621010, China.
authors: Zhengwei
authors: Z
authors: Xiong
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Xinmin
authors: X
authors: Wang
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Weidong
authors: W
authors: Wu
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Xuemin
authors: X
authors: Wang
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Liping
authors: L
authors: Peng
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Yan
authors: Y
authors: Zhao
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Dawei
authors: D
authors: Yan
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Tao
authors: T
authors: Jiang
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Changle
authors: C
authors: Shen
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Zhiqiang
authors: Z
authors: Zhan
authors: Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, CAEP, Southwest University of Science and Technology, Mianyang 621010, China.
authors: Linhong
authors: L
authors: Cao
authors: Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987-7, Mianyang 621900, China. liwh1974@sina.com.
authors: Weihua
authors: W
authors: Li