All-optical beam control with high speed using image-induced blazed gratings in coherent media

被引：66
|
作者：
Zhao, L. [1 ]
Duan, Wenhui [1 ]
Yelin, S. F. [2 ,3 ]
机构：
[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[2] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
[3] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA
来源：
PHYSICAL REVIEW A | 2010年 / 82卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
ELECTROMAGNETICALLY INDUCED TRANSPARENCY; LIGHT; PARTICLE; PULSES; STEP;
D O I：
10.1103/PhysRevA.82.013809
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on the theory of electromagnetically induced transparency, we study the formation of all-optical blazed transmission gratings in a coherently driven three-level atomic system using intensity-modulated images in coupling fields. Also, we analyze the feasibility of high-speed (megahertz) modulation for the induced gratings by means of image-bearing flat-top pulse trains. Consequently, continuous-wave probe fields can be efficiently and rapidly deflected in free space. When more sophisticated images are adopted, our scheme can provide further possibilities of all-optical beam splitting and fanning.
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页数：8
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