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最优化参数控制提高超冷铯分子振转光谱的信噪比

张一驰 武寄洲 马杰 赵延霆 汪丽蓉 肖连团 贾锁堂

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最优化参数控制提高超冷铯分子振转光谱的信噪比

张一驰, 武寄洲, 马杰, 赵延霆, 汪丽蓉, 肖连团, 贾锁堂

Research on improve the SNR of ultracold cesium molecule rovibronic spectrum via best optimization parameter control

Zhang Yi-Chi, Wu Ji-Zhou, Ma Jie, Zhao Yan-Ting, Wang Li-Rong, Xiao Lian-Tuan, Jia Suo-Tang
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  • 超冷原子光缔合光谱对于研究长程分子势能结构、分子常数和分子相关动力学过程具有重要意义.光缔合光谱的信噪比作为衡量探测技术的重要指标之一,直接影响光谱的分辨能力和探测灵敏度.利用调制荧光光谱技术获得了超冷长程铯分子超精细振转光谱.通过研究解调参数,即积分时间和灵敏度,发现解调参数对光谱信号的信噪比有重要影响,且依赖关系呈非线性.结合相关实验系统,实现了对光谱信噪比的最优化控制,为进一步研究超冷铯分子长程态振转能级结构奠定了重要的实验基础.
    Ultracold atom photoassociation spectroscopy is significant for studying the long-range molecular potential energy structure. The signal-noise ratio of ultracold Cesium Molecule photoassociation Rovibronic Spectrum is one of the indicators as a measure of detection technology which directly affect the distinguishing ability and detection sensitivity of the spectra. We obtain an long-range ultracold cesium molecular hyperfine rovibration spectra by modulating the fluorescence spectroscopy. We find that demodulation parameters have a significant impact to the signal-noise ratio of spectra by studying the demodulation parameters such as integration time and sensitivity, which show nonlinear relation with the ratio. We achieve the optimal control of the signal-noise ratio for spectrum according to our experiment, which laid an important foundation for further studying the long-range state rovibration level of ultracold cesium molecule.
    • 基金项目: 国家自然科学基金重点项目(批准号:10934004), 国家重点基础研究发展计划( 批准号:2006CB921600,2008CB317103), 国家高技术研究发展计划(批准号:2009AA01Z319 ), 国家自然科学基金(批准号:60978018, 60978001,60808009), 山西省自然科学基金(批准号:2008011004,2009011059-2), 教育部新世纪优秀人才支持计划 (批准号:NCET- 06-0259 ), 教育部新教师基金(批准号:200801081021)资助的
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    Prodan I D, Pichler M, Junker M, Hulet R G, Bohn J L 2003 Phs. Rev. Lett. 91 080402

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    Monroe C, Swann W, Robinson H, Wieman C 1990 Phys. Rev Lett. 65 1571

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    Bhon J L, Julienne P S 1999 Phs. Rev. A 60 414

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    Ma J, Wang L R, Zhao Y T, Xiao L T,Jia S T 2009 Journal of Spectroscopy 255 106

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    Wang L R, Ma J, Ji W B, Wang G P, Xiao L T, Jia S T 2007 Laser Physics 17 1171

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    Kraft S D, Mudrich M, Staudt M U, Lange J, Dulieu O, Wester R, Weidemuller M 2005 Phs. Rev. A 71 013417

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    Thorsheim H R, Weiner J, Julienne P S 1987 Phs. Rev. Lett. 58 2420

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    Zinner G, Binneweiss T, Reihle F, Tiemann E 2000 Phs. Rev. Lett. 85 2292

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    Herschbach N, Tol P J J, Vassen W, Hogerworst W, Woestenek G, Thomsen J W, Straten P V D, Niehaus A 2000 Phs. Rev. Lett. 84 1874

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    Mosk A P, Reynolds M W, Hijman T W, Waleaven J T M 1999 Phs. Rev. Lett. 82 307

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    Stwally W C, Uang Y, Picher G 1978 Phs. Rev. Lett. 41 1164

    [18]

    Wang L R, Ma J, Zhang L J, Xiao L T, Jia S T 2007 Acta Phys. Sin. 56 6373 (in Chinese) [汪丽蓉、马 杰、 张临杰、 肖连团、 贾锁堂 2007 物理学报 56 6373]

    [19]

    Yuan Z L, Zhang C M, Zhao B C 2007 Acta Phys. Sin. 56 6413 (in Chinese) [袁志林、张淳民、赵葆常 2007 物理学报 56 6413]

    [20]

    Jiang K J, Li K, Wang J, Zhan M S 2006 Acta Phys. Sin. 55 125 (in Chinese) [江开军、李 可、王 谨、詹明生 2006 物理学报 55 125]

    [21]

    Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483

    [22]

    Geng T , Yan S B, Wang Y H, Yang H J, Zhang T C, Wang J M 2005 Acta Phys. Sin. 54 5104 (in Chinese) [耿 涛、闫树斌、王彦华、杨海菁、张天才、王军民 2005 物理学报 54 5104]

  • [1]

    Gan I H, Li Y M, Chan X Z 1996 Chin Phys. Lett. 13 821

    [2]

    Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483

    [3]

    Prodan I D, Pichler M, Junker M, Hulet R G, Bohn J L 2003 Phs. Rev. Lett. 91 080402

    [4]

    Bohn J L, Julienne P S 1996 Phs. Rev. A 54 4637

    [5]

    Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483

    [6]

    Monroe C, Swann W, Robinson H, Wieman C 1990 Phys. Rev Lett. 65 1571

    [7]

    Bhon J L, Julienne P S 1999 Phs. Rev. A 60 414

    [8]

    Ma J, Wang L R, Zhao Y T, Xiao L T,Jia S T 2009 Journal of Spectroscopy 255 106

    [9]

    Wang L R, Ma J, Ji W B, Wang G P, Xiao L T, Jia S T 2007 Laser Physics 17 1171

    [10]

    Kraft S D, Mudrich M, Staudt M U, Lange J, Dulieu O, Wester R, Weidemuller M 2005 Phs. Rev. A 71 013417

    [11]

    Thorsheim H R, Weiner J, Julienne P S 1987 Phs. Rev. Lett. 58 2420

    [12]

    Zinner G, Binneweiss T, Reihle F, Tiemann E 2000 Phs. Rev. Lett. 85 2292

    [13]

    Herschbach N, Tol P J J, Vassen W, Hogerworst W, Woestenek G, Thomsen J W, Straten P V D, Niehaus A 2000 Phs. Rev. Lett. 84 1874

    [14]

    Mosk A P, Reynolds M W, Hijman T W, Waleaven J T M 1999 Phs. Rev. Lett. 82 307

    [15]

    Picher M, Chen H, Stwalley 2004 J. Chem. Phys. 121 6779

    [16]

    Plillet P, Crubellier A, Blleton A, Dulieu O, Nosbaum P, Mourach I, Masnou S F 1997 J. Phys.B 30 2801

    [17]

    Stwally W C, Uang Y, Picher G 1978 Phs. Rev. Lett. 41 1164

    [18]

    Wang L R, Ma J, Zhang L J, Xiao L T, Jia S T 2007 Acta Phys. Sin. 56 6373 (in Chinese) [汪丽蓉、马 杰、 张临杰、 肖连团、 贾锁堂 2007 物理学报 56 6373]

    [19]

    Yuan Z L, Zhang C M, Zhao B C 2007 Acta Phys. Sin. 56 6413 (in Chinese) [袁志林、张淳民、赵葆常 2007 物理学报 56 6413]

    [20]

    Jiang K J, Li K, Wang J, Zhan M S 2006 Acta Phys. Sin. 55 125 (in Chinese) [江开军、李 可、王 谨、詹明生 2006 物理学报 55 125]

    [21]

    Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483

    [22]

    Geng T , Yan S B, Wang Y H, Yang H J, Zhang T C, Wang J M 2005 Acta Phys. Sin. 54 5104 (in Chinese) [耿 涛、闫树斌、王彦华、杨海菁、张天才、王军民 2005 物理学报 54 5104]

计量
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  • PDF下载量:  718
  • 被引次数: 0
出版历程
  • 收稿日期:  2009-11-17
  • 修回日期:  2009-12-16
  • 刊出日期:  2010-04-05

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