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

doi:10.7498/aps.61.223702

Abstract

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.

Keywords:

Authors and contacts

1.
Science College, Nantong University, Nantong 226007, China;
2.
State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China
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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Cited By

[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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Vol. 61, Issue 22 - 2012-11-20

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