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In this paper, we report a precision measurement of hyperfine splitting and absolute frequency of D1 line in cold 6Li atoms. The gray molasses is realized in the experiment and the tempreature is cooled to about 50 μK, which is lower than the Doppler cooling limit, 140 μK. By use of an optical comb, the absolute frequencies and corresponding hyperfine splitting are measured. We obtain frequencies of 446789503.080(35) MHz, 446789529.198(36) MHz, 446789731.316(50) MHz and 446789757.476(29) MHz for the D1 line. The results are in reasonable agreement with the theoretical calculations and consistent with earlier measurements. They could provide an important foundation for future frequency measurement, α constant and nuclear radius.
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Keywords:
- 6Li cold atoms /
- gray molasses /
- optical comb /
- precision measurement
[1] Yan Z, Drake G W F 2002 Phys. Rev. A 66 042504
[2] Yan Z, Norterhauser W, Drake G W F 2008 Phys. Rev. Lett. 100 243002
[3] Puchalski M, Pachucki K 2009 Phys. Rev. A 79 032510
[4] Puchalski M, Moro A M, Pachucki K 2006 Phys. Rev. Lett. 97 133001
[5] Sánchez R, Nörtershäuser W, Ewald G, Albers D, Behr J, Bricault P, Bushaw B A, Dax A, Dilling J, Dombsky M, Drake G W F, Götte S, Kirchner R, Kluge H J, Khl Th, Lassen J, Levy C D P, Pearson M R, Prime E J, Ryjkov V, Wojtaszek A, Yan Z C, Zimmermann C 2006 Phys. Rev. Lett. 96 033002
[6] Noble G, Schultz B, Ming H, Wijingaarden W 2006 Phys. Rev. A 74 012502
[7] Pieper S, Pandharipande V, Wiringa R, Carlson J 2001 Phys. Rev. C 64 014001
[8] Puchalski M, Pachucki K 2014 Phys. Rev. Lett. 113 073004
[9] Borg K C, Eck T G, Wider H 1967 Phys. Rev. 153 91
[10] Arimondo E, Inguscio M, Violino P 1977 Rev. Mod. Phys. 49 31
[11] Radziemski L J, Engleman R, Brault J W 1995 Phys. Rev. A 52 4462
[12] Sansonetti C J, Richou B, Engleman R, Radziemski L J 1995 Phys. Rev. A 52 2682
[13] Das D, Natarajan V 2007 Phys. Rev. A 75 052508
[14] Sansonetti C, Simien C, Gillaspy J, Tan J, Brewer S, Brown R, Wu S J, Porto J 2001 Phys. Rev. Lett. 107 023001
[15] Grynberg G, Courtois J Y 1994 EPL 27 41
[16] Grier A, Ferrier-Barbut I, Rem B, Delehaye M, Khaykovich L, Chevy F, Salomon C 2013 Phys. Rev. A 87 063411
[17] Liu Y, Lin J, Huang G, Guo Y, Duan C 2001 J. Opt. Soc. Am. B 18 666
[18] Walls J, Ashby R, Clarke J J, Lu B, Wijngaarden W A 2003 Eur. Phys. J. D 22 159
[19] Das D, Natarajan V 2008 J. Phys. B: At. Mol. Opt. Phys. 41 035001
[20] Beckmann A, Böklen K D, Elke D 1974 Z. Phys. 270 173
[21] Noble G A, Schultz B E, Ming H, Wijngaarden W A 2006 Phys. Rev. A 74 012502
[22] Lien Y H, Lo K J, Chen H C, Chen J R, Tian J Y, Shy J T, Liu Y W 2011 Phys. Rev. A 84 042511
[23] Chang H, Myneni K, Smith D D, Liaghati-Mobarhan H R 2017 Rev. Sci. Instrum. 88 063101
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[1] Yan Z, Drake G W F 2002 Phys. Rev. A 66 042504
[2] Yan Z, Norterhauser W, Drake G W F 2008 Phys. Rev. Lett. 100 243002
[3] Puchalski M, Pachucki K 2009 Phys. Rev. A 79 032510
[4] Puchalski M, Moro A M, Pachucki K 2006 Phys. Rev. Lett. 97 133001
[5] Sánchez R, Nörtershäuser W, Ewald G, Albers D, Behr J, Bricault P, Bushaw B A, Dax A, Dilling J, Dombsky M, Drake G W F, Götte S, Kirchner R, Kluge H J, Khl Th, Lassen J, Levy C D P, Pearson M R, Prime E J, Ryjkov V, Wojtaszek A, Yan Z C, Zimmermann C 2006 Phys. Rev. Lett. 96 033002
[6] Noble G, Schultz B, Ming H, Wijingaarden W 2006 Phys. Rev. A 74 012502
[7] Pieper S, Pandharipande V, Wiringa R, Carlson J 2001 Phys. Rev. C 64 014001
[8] Puchalski M, Pachucki K 2014 Phys. Rev. Lett. 113 073004
[9] Borg K C, Eck T G, Wider H 1967 Phys. Rev. 153 91
[10] Arimondo E, Inguscio M, Violino P 1977 Rev. Mod. Phys. 49 31
[11] Radziemski L J, Engleman R, Brault J W 1995 Phys. Rev. A 52 4462
[12] Sansonetti C J, Richou B, Engleman R, Radziemski L J 1995 Phys. Rev. A 52 2682
[13] Das D, Natarajan V 2007 Phys. Rev. A 75 052508
[14] Sansonetti C, Simien C, Gillaspy J, Tan J, Brewer S, Brown R, Wu S J, Porto J 2001 Phys. Rev. Lett. 107 023001
[15] Grynberg G, Courtois J Y 1994 EPL 27 41
[16] Grier A, Ferrier-Barbut I, Rem B, Delehaye M, Khaykovich L, Chevy F, Salomon C 2013 Phys. Rev. A 87 063411
[17] Liu Y, Lin J, Huang G, Guo Y, Duan C 2001 J. Opt. Soc. Am. B 18 666
[18] Walls J, Ashby R, Clarke J J, Lu B, Wijngaarden W A 2003 Eur. Phys. J. D 22 159
[19] Das D, Natarajan V 2008 J. Phys. B: At. Mol. Opt. Phys. 41 035001
[20] Beckmann A, Böklen K D, Elke D 1974 Z. Phys. 270 173
[21] Noble G A, Schultz B E, Ming H, Wijngaarden W A 2006 Phys. Rev. A 74 012502
[22] Lien Y H, Lo K J, Chen H C, Chen J R, Tian J Y, Shy J T, Liu Y W 2011 Phys. Rev. A 84 042511
[23] Chang H, Myneni K, Smith D D, Liaghati-Mobarhan H R 2017 Rev. Sci. Instrum. 88 063101
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