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用空间光调制器产生三维光阱阵列

徐淑武 周巧巧 顾宋博 纪宪明 印建平

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用空间光调制器产生三维光阱阵列

徐淑武, 周巧巧, 顾宋博, 纪宪明, 印建平

Generation of the three-dimensional array of optical trap by spatial light modulator

Xu Shu-Wu, Zhou Qiao-Qiao, Gu Song-Bo, Ji Xian-Ming, Yin Jian-Ping
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  • 本文提出了用液晶空间光调制器制作复合相位光栅、产生三维光阱阵列的新方案. 在本方案中, 首先将一维矩形光栅转变为能够产生纵向光阱阵列的环形光栅, 再把环形光栅和二维矩形光栅组合成复合光栅. 根据现有空间光调制器的技术参数, 模拟仿真设计了产生5× 5× 5光阱阵列的光栅, 以普通功率的高斯光波为输入光, 正透镜聚焦衍射光, 计算输出光强分布, 结果表明: 在透镜焦点附近获得具有很高峰值光强和光强梯度的三维光阱阵列, 囚禁冷原子的光学偶极势达到mK量级, 对原子的作用力远大于原子的重力. 用大功率激光作为输入光波时, 产生的光阱阵列也能用于囚禁Stark减速后的冷分子.
    In this paper, a new scheme of generating a three-dimensional array of optical trap is proposed by using a composite phase grating that is fabricated by liquid crystal spatial light modulator. The composite phase grating is formed by combining the circular grating, which is generated by transforming a one-dimensional rectangular grating into a circular grating that can produce the longitudinal array of optical trap, with a two-dimensional rectangular grating. The grating that generates 5× 5× 5 array of optical trap is simulated according to the technical parameters of the spatial light modulator. The output intensity distribution is calculated by using the Gaussian light wave with ordinary power as input light and focusing the diffracting light with lens. The results show that three-dimensional array of optical trap with a very high peak value of intensity and an intensity gradient is obtained around the focus of the lens. The optical dipole potential of trapping cold atoms achieves the order of mK, and the interaction force between the atom and the optical field is much greater than the atom gravity. When the high power laser is used as input light, the generated array of optical trap can also be employed to trap the cold molecules produced by Stark deceleration.
    • 基金项目: 国家自然科学重点基金(批准号: 11034002)、国家自然科学基金(批准号: 10904037, 10974055)、科技部量子调控重大研究计划项目(批准号: 2011CB921602)、华东师范大学精密光谱科学与技术国家重点实验室开放基金和江苏省自然科学基金(批准号: BK2008183) 资助的课题.
    • Funds: Project supported by the Key Program National Natural Science Foundation of China (Grant No. 11034002), the National Natural Science Foundation of China (Grant Nos. 10904037, 10974055), the National Key Basic Research and Development Program of China (Grant No. 2011CB921602), the Open Research Fund of State Key Laboratory of Precision Spectroscopy, East China Normal University and the Natural Science Foundation of Jiangsu Province (Grant No. BK2008183).
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    Grynberg G, Robilliard C 2001 Phys. Rep. 355 335

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    Liu X, Zhang J, Wu L Y, Gan Y F 2011 Chin. Phys. B 20 024211

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    Gu S B, Xu S W, Lu J F Ji X M, Yin J P 2012 Acta Phys. Sin. 61 153701 (in Chinese) [顾宋博, 徐淑武, 陆俊发, 纪宪明, 印建平 2012 物理学报 61 153701]

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    Bethlem H L, Crompvoets F M H, Jongma R T, Meerakker S Y T, Meijer G 2002 Phys. Rev. A 65 053416

  • [1]

    Tie L, Xue J K 2011 Chin.Phys. B 20 120311

    [2]

    Wang J J, Zhang A X, Xue J K 2011 Chin. Phys. B 20 080308

    [3]

    Stoferle T, Moritz H, Gunter K, Kohl M, Esslinger T 2006 Phys. Rev. Lett. 96 030401

    [4]

    Birkl G, Gatzke M, Deutsch I H, Rolston S L, Phillips W D 1995 Phys. Rev. Lett. 75 2823

    [5]

    Matthias W, Andreas H, Axel G, Tilman E, Theodor W H 1995 Phys. Rev. Lett. 75 4583

    [6]

    Tasgin M E, Mustecaplioglu Ö E, Oktel M Ö 2007 Phys. Rev. A 75 063627

    [7]

    Petrosyan D 2007 Phys. Rev. A 76 053823

    [8]

    Zaleski T A, Kopec T K 2010 J. Phys. A: Math. Theor. 43 425303

    [9]

    Wang T, Javanainen J, Yelin S F 2007 Phys. Rev. A 76 011601

    [10]

    McKay D C, DeMarco B 2011 Rep. Prog. Phys. 74 054401

    [11]

    Jiannis K P, Peter L K 2003 Phys.Rev. Lett. 91 107902

    [12]

    Semmler D, Wernsdorfer J, Bissbort U, Byczuk K, Hofstetter W 2010 Phys. Rev. B 82 235115

    [13]

    Kastner M. 2010 Phys. Rev. Lett. 104 240403

    [14]

    Kessler D A, Barkai E 2010 Phys. Rev. Lett. 105 120602

    [15]

    Yi L, Mejri S, McFerran J J, Le C Y, Bize S 2011 Phys. Rev. Lett. 106 073005

    [16]

    Hemmerich A, Hänsch T W 1993 Phys. Rev. Lett. 70 410

    [17]

    Friebel S, Andrea C D, Walz J, Weitz M, Hansch T W 1998 Phys. Rev. A 57 R20

    [18]

    Scheunemann R, Cataliotti F S, Hansch T W, Weitz M 1998 Phys. Rev. A 62 051801

    [19]

    Grynberg G, Robilliard C 2001 Phys. Rep. 355 335

    [20]

    Dumke R, Volk M, Mther T, Buchkremer F B J, Birkl G, Ertmer W 2002 Phys. Rev. Lett. 89 097903

    [21]

    Ji X M, Lu J F, Mu R W, Yin J P 2006 Acta Phys. Sin. 55 3396 (in Chinses) [纪宪明, 陆俊发, 沐仁旺, 印建平 2006 物理学报 55 3396]

    [22]

    Ji X M, Yin J P 2004 Acta Phys. Sin. 53 4163 (in Chinese) [纪宪明, 印建平2004 物理学报 53 4163]

    [23]

    Mu R W, Lu J F, Xu S U, Ji X M, Yin J P 2009 J. Opt. Soc. Am. B 26 80

    [24]

    Fatemi F K, Bashkansky M, Dutton Z 2007 Opt. Express 15 3589

    [25]

    Gabriel M, David E, Jörgen B 2007 Appl. Opt. 46 95

    [26]

    Lu J F, Zhou Q, Ji X M, Yin J P 2011 Acta Phys. Sin. 60 063701 (in Chinese) [陆俊发, 周琦, 纪宪明, 印建平 2011 物理学报 60 063701]

    [27]

    Qi X Q, Gao C Q 2011 Acta Phys. Sin. 60 014208 (in Chinese) [齐晓庆, 高春清 2011 物理学报 60 014208]

    [28]

    Zheng H D, Yu Y J, Dai L M, Wang T 2010 Acta Phys. Sin. 59 6145 (in Chinese) [郑华东, 于瀛洁, 代林茂, 王涛 2010 物理学报 59 6145]

    [29]

    Yu Y J, Wang T, Zheng H D 2009 Acta Phys Sin. 58 3154 (in Chinese) [于瀛洁, 王涛, 郑华东2009 物理学报 58 3154]

    [30]

    Zhou Q, Lu J F, Yin J P 2010 Chin. Phys. B 19 093202

    [31]

    Zhou Q, Lu J F, Yin J P 2010 Chin. Phys. B 19 123203

    [32]

    Liu X, Zhang J, Wu L Y, Gan Y F 2011 Chin. Phys. B 20 024211

    [33]

    Gu S B, Xu S W, Lu J F Ji X M, Yin J P 2012 Acta Phys. Sin. 61 153701 (in Chinese) [顾宋博, 徐淑武, 陆俊发, 纪宪明, 印建平 2012 物理学报 61 153701]

    [34]

    Bethlem H L, Crompvoets F M H, Jongma R T, Meerakker S Y T, Meijer G 2002 Phys. Rev. A 65 053416

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出版历程
  • 收稿日期:  2012-02-16
  • 修回日期:  2012-06-12
  • 刊出日期:  2012-11-05

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