Lifetime Measurement of Cold Atoms in an Integrating Sphere
ZHANG Wen-Zhuo1,2, WANG Xu-Cheng1,2, CHENG Hua-Dong1, XIAO Ling1, LIU Liang1, WANG Yu-Zhu1
1Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018002Graduate University of the Chinese Academy of Sciences, Beijing 100049
Lifetime Measurement of Cold Atoms in an Integrating Sphere
ZHANG Wen-Zhuo1,2, WANG Xu-Cheng1,2, CHENG Hua-Dong1, XIAO Ling1, LIU Liang1, WANG Yu-Zhu1
1Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018002Graduate University of the Chinese Academy of Sciences, Beijing 100049
摘要We present an experimental measurement of the lifetime of the cold 87Rb atoms in an integrating sphere. The atoms are cooled by the diffuse light which is generated by the diffuse reflection of laser beams in the integrating sphere. Our result shows that the lifetime is primarily determined by the free fall of the cold 87Rb atoms, and its half-life can reach 40ms, which is suitable for many experiments, especially for a cold atom clock.
Abstract：We present an experimental measurement of the lifetime of the cold 87Rb atoms in an integrating sphere. The atoms are cooled by the diffuse light which is generated by the diffuse reflection of laser beams in the integrating sphere. Our result shows that the lifetime is primarily determined by the free fall of the cold 87Rb atoms, and its half-life can reach 40ms, which is suitable for many experiments, especially for a cold atom clock.
[1] Josse V, Dantan A, Vernac L, Bramati A, Pinard M andGiacobino E 2003 Phys. Rev. Lett. 91 103601 [2] Labeyrie G, Vaujour E, M\"uller C A, Delande D, MiniaturalC, Wilkowski D and Kaiser R 2003 Phys. Rev. Lett. 91223904 [3] Gu S H, Behr J A, Groves M N and Dhat D 2003 Opt.Commun. 220 365 [4] Labeyrie G, Delande D, Kaiser R and Miniatural C 2006 Phys. Rev. Lett. 97 013004 [5] Takano T, Fuyamal M, Namiki R and Takahashi Y 2009 Phys. Rev. Lett. 102 033601 [6] Guillot E, Pottie P E and Dimarcq N 2001 Opt. Lett. 26 1639 [7] Ma H Y, Cheng H D, Zhang W Z, Liu L and Wang Y Z 2009 Acta Phys. Sin. 58 199 (in Chinese) [8] Cheng H D, Zhang W Z, Ma H Y, Liu L and Wang Y Z 2009 Phys. Rev. A 79 023407
2009, Vol. 26 
