| Optical switching based on the manipulation of microparticles in a colloidal liquid using strong scattering force |
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| 作者姓名： | 刘进 刘正奇 冯天华 戴峭峰 吴立军 兰胜 |
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| 作者单位： | Laboratory of Photonic Information Technology,School for Information and Optoelectronic Science and Engineering,South China Normal University |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 10974060 and 10774050 ) and the Program for Innovative Research Team of the Higher Education of Guangdong Province of China (Grant No. 06CXTD005). |
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| 摘 要： | This paper demonstrates the realization of an optical switch by optically manipulating a large number of polystyrene spheres contained in a capillary.The strong scattering force exerted on polystyrene spheres with a large diameter of 4.3 μm is employed to realize the switching operation.A transparent window is opened for the signal light when the polystyrene spheres originally located at the beam centre are driven out of the beam region by the strong scattering force induced by the control light.The switching dynamics under different incident powers is investigated and compared with that observed in the optical switch based on the formation of optical matter.It is found that a large extinction ratio of ～ 30 dB and fast switching-on and switching-off times can be achieved in this type of switch.
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| 关 键 词： | optical switching scattering force optical matter |
| 收稿时间： | 5/5/2010 12:00:00 AM |
Optical switching based on the manipulation of microparticles in a colloidal liquid using strong scattering force |
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| Liu Jin,Liu Zheng-Qi,Feng Tian-Hu,Dai Qiao-Feng,Wu Li-Jun and Lan Sheng.Optical switching based on the manipulation of microparticles in a colloidal liquid using strong scattering force[J].Chinese Physics B,2010,19(12):124209-124209. |
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| Authors: | Liu Jin Liu Zheng-Qi Feng Tian-Hu Dai Qiao-Feng Wu Li-Jun and Lan Sheng |
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| Affiliation: | Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China |
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| Abstract: | This paper demonstrates the realization of an optical switch by optically manipulating a large number of polystyrene spheres contained in a capillary. The strong scattering force exerted on polystyrene spheres with a large diameter of 4.3 μm is employed to realize the switching operation. A transparent window is opened for the signal light when the polystyrene spheres originally located at the beam centre are driven out of the beam region by the strong scattering force induced by the control light. The switching dynamics under different incident powers is investigated and compared with that observed in the optical switch based on the formation of optical matter. It is found that a large extinction ratio of ～30dB and fast switching-on and switching-off times can be achieved in this type of switch. |
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| Keywords: | optical switching scattering force optical matter |
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