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Coherent population trapping (CPT) atomic clocks are prevailingly realized by exciting CPT resonance with circularly polarized bichromatic coherent light (σ+-σ+ scheme), while atom utilization efficiency is relatively low in the scheme. For improving efficiency, we experimentally study the scheme of realizing CPT resonance through the interaction between atoms and parallel linearly polarized bichromatic coherent light field (lin//lin scheme). In the same experimental conditions the experimental results show that the signal-noise ratio of the CPT resonance signal is twice, and the differential slope is 1.65 time higher than those of σ+-σ+ scheme. The experimental results reveal that the scheme is an ideal candidate for low power consuming atomic clock and magnetometer.
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Keywords:
- coherent population trapping /
- atomic clock /
- microwave /
- laser
[1] Vanier J 2005 Appl. Phys. B 81 421
[2] Deng J L, Hu Z F, He H J, Wang Y Z 2006 Chin. Phys. Lett. 23 1745
[3] Jau Y Y, Miron E, Post A B, Kuzma N N, Happer W 2004 Phys. Rev. Lett. 93 160802
[4] Liu G B, Du R C, Liu C Y, Gu S H 2008 Chin. Phys. Lett. 25 472
[5] Shah V, Knappe S, Hollberg L, Kitching J 2007 Opt. Lett. 32 1244
[6] Merimaa M, Lindvall T, Tittonen I, Ikonen E 2003 J. Opt. Soc. Am. B 20 273
[7] Liu L, Guo T, Deng K, Liu X Y, Chen X Z, Wang Z 2007 Chin. Phys. Lett. 24 1883
[8] Du R C, Chen J H, Liu C Y, Gu S H 2009 Acta Phys. Sin. 58 6117(in Chinese) [杜润昌, 陈杰华, 刘朝阳, 顾思洪 2009 物理学报 58 6117]
[9] Du R C, Liu G B, Chen J H, Wang J, Liu C Y, Gu S H 2008 Spectroscopy and Spectral Analysis 28 1697 (in Chinese) [杜润昌, 刘国宾, 陈杰华, 王瑾, 刘朝阳, 顾思洪 2008 光谱学与光谱分析 28 1697]
[10] Chen J H, Du R C, Zhao J C, Li Y Y,Ma H, Liu C Y, Gu S H 2010 Acta Metr. Sin. 31 417 (in Chinese) [陈杰华, 杜润昌, 赵劼成, 黎英云, 马洪, 刘朝阳, 顾思洪 2010 计量学报 31 417]
[11] Liu G B, Gu S H 2010 J. Phys. B 43 035004
[12] Kargapoltsev S V, Kitching J, Hollberg L, Taichenachev A V, Velichansky V L, Yudin V I 2004 Laser Phys. Lett. 1 495
[13] Zanon T, Guerandel S, de Clercq E, Holleville D, Dimarcq N, Clairon A 2005 Phys. Rev. Lett. 94 193002
[14] Taichenachev A V, Yudin V I, Velichansky V L, Zibrov S A 2005 JETP Lett. 82 398
[15] Levi F, Godone A, Vanier J, Micalizio S, Modugno G 2000 Eur. Phys. J. D 12 53
[16] Watabe K, Ikegami T, Takamizawa A, Yanagimachi S, Ohshima S, Knappe S 2009 Appl. Opt. 48 1098
[17] Wang Y Q, Wang Q J, Fu J S, Dong T Q 1986 (Beijing: Sciences Press) p236 (in Chinese) [王义遒, 王庆吉, 傅济时, 董太乾 1986 量子频标原理 (北京: 科学出版社) 第236页]
[18] Agap’ev B D, Gornyi M B, Matisov B G, Rozhdestvensky Y V 1993 Phys. Usp. 36 763
[19] Mikhailov E E, Travis Horrom, Nathan Belcher, Irina Novikova 2010 J. Opt. Soc. Am. B 27 417
[20] Knappe S, Schwindt P D D, Shah V, Hollberg L, Kitching J, Liew L , Moreland J 2005 Optics Express 13 1249
[21] Lutwak R 2009 IEEE Int. Frequency Control Symp. and EFTF Conf. 573
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[1] Vanier J 2005 Appl. Phys. B 81 421
[2] Deng J L, Hu Z F, He H J, Wang Y Z 2006 Chin. Phys. Lett. 23 1745
[3] Jau Y Y, Miron E, Post A B, Kuzma N N, Happer W 2004 Phys. Rev. Lett. 93 160802
[4] Liu G B, Du R C, Liu C Y, Gu S H 2008 Chin. Phys. Lett. 25 472
[5] Shah V, Knappe S, Hollberg L, Kitching J 2007 Opt. Lett. 32 1244
[6] Merimaa M, Lindvall T, Tittonen I, Ikonen E 2003 J. Opt. Soc. Am. B 20 273
[7] Liu L, Guo T, Deng K, Liu X Y, Chen X Z, Wang Z 2007 Chin. Phys. Lett. 24 1883
[8] Du R C, Chen J H, Liu C Y, Gu S H 2009 Acta Phys. Sin. 58 6117(in Chinese) [杜润昌, 陈杰华, 刘朝阳, 顾思洪 2009 物理学报 58 6117]
[9] Du R C, Liu G B, Chen J H, Wang J, Liu C Y, Gu S H 2008 Spectroscopy and Spectral Analysis 28 1697 (in Chinese) [杜润昌, 刘国宾, 陈杰华, 王瑾, 刘朝阳, 顾思洪 2008 光谱学与光谱分析 28 1697]
[10] Chen J H, Du R C, Zhao J C, Li Y Y,Ma H, Liu C Y, Gu S H 2010 Acta Metr. Sin. 31 417 (in Chinese) [陈杰华, 杜润昌, 赵劼成, 黎英云, 马洪, 刘朝阳, 顾思洪 2010 计量学报 31 417]
[11] Liu G B, Gu S H 2010 J. Phys. B 43 035004
[12] Kargapoltsev S V, Kitching J, Hollberg L, Taichenachev A V, Velichansky V L, Yudin V I 2004 Laser Phys. Lett. 1 495
[13] Zanon T, Guerandel S, de Clercq E, Holleville D, Dimarcq N, Clairon A 2005 Phys. Rev. Lett. 94 193002
[14] Taichenachev A V, Yudin V I, Velichansky V L, Zibrov S A 2005 JETP Lett. 82 398
[15] Levi F, Godone A, Vanier J, Micalizio S, Modugno G 2000 Eur. Phys. J. D 12 53
[16] Watabe K, Ikegami T, Takamizawa A, Yanagimachi S, Ohshima S, Knappe S 2009 Appl. Opt. 48 1098
[17] Wang Y Q, Wang Q J, Fu J S, Dong T Q 1986 (Beijing: Sciences Press) p236 (in Chinese) [王义遒, 王庆吉, 傅济时, 董太乾 1986 量子频标原理 (北京: 科学出版社) 第236页]
[18] Agap’ev B D, Gornyi M B, Matisov B G, Rozhdestvensky Y V 1993 Phys. Usp. 36 763
[19] Mikhailov E E, Travis Horrom, Nathan Belcher, Irina Novikova 2010 J. Opt. Soc. Am. B 27 417
[20] Knappe S, Schwindt P D D, Shah V, Hollberg L, Kitching J, Liew L , Moreland J 2005 Optics Express 13 1249
[21] Lutwak R 2009 IEEE Int. Frequency Control Symp. and EFTF Conf. 573
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