利用囚禁在Paul型离子阱中的铟单离子和飞秒光频梳实现了铟离子5s2 1So(F=9/2)-5s5p 3P1(F=11/2)230.6 nm冷却用跃迁频率的精密测量,准确度有超过两个量级的提高.一台基于半导体激光器的四倍频系统作为光源,飞秒激光光频梳作为光频测量的工具,它的参考源为一台铯原子钟.铟离子,'115In+与113In+的跃迁频率分别为1 299 648 954.54(10)MHz和1 299 649 585.36(16)MHz.该跃迁对应的纯同位素移动为630.82(19)MHz,考虑超精细相互作用后,同位素移动为695.76(1.68)MHz.
参考文献
[1] | Wineland D J,Itano W M.Laser cooling of atoms[3].Phys.Rev.A,1979,20:1521-1540. |
[2] | Cirac J I,Garay L J,Blattr R,et al.Laser cooling of trapped ions:The influence of micromotions[3].Phys.Rev.A,1994,49:421-432. |
[3] | Rafac R J,Young B C,Beall J A,et al.Sub-dekahertz ultraviolet spectroscopy of 199Hg+[J].Phys.Rev.Lett.,2000,85:2462-2465. |
[4] | Barwood G P,Huang G,Klein H A,et al.Subkilohertz comparison of the single-ion optical-clock 2S1/2-2D5/2 transtion in two 88Sr+ traps[J].Phys.Rev.A,1999,59:R3178-R3181. |
[5] | Tamm Ch,Engelke D,Buehner V.Spectroscopy of the electric-quadrupole transition 2S1/2(F=O)-2D3/2(F=2) in trapped 171Yb+[J].Phys.Rev.A,2000,61:053405-053413. |
[6] | Roberts M,Taylor P,Gateva-Kostova S V,et al.Measurement of the 2S1/2-2D5/2 clock transition in a single 171Yb+ ion[J].Phys.Rev.A,1999,60:2867-2872. |
[7] | Becket Th,Vonzanthier J,Nevsky A Y,et al.High-resolution spectroscopy of a single In+ ion:progress towards an optical frequency standard[J].Phys.Rev.A,2001,63:051802-051805. |
[8] | Zhao X,Yu N,Dehmelt H,et al.Isotope-shift measurement of the 6 2S1/2-5 2D5/2 transition in Ba+[J].Phys.Rev.A,1995,51:4483-4486. |
[9] | Paschen F,Campbell J S.Ann.Phys.(Leipzig),1938,31:29-30. |
[10] | Peik E,Hollemann G,Walther H.Laser cooling and quantum jumps of a single indium ion[J].Phys.Rev.A,1994,49:402-408. |
[11] | Larkins P L,Hannaford P.Precision energies and hyperfine structures of the 5s5p 3P00,1,2 and 5s6s 3S1 level in InⅡ[J].Z.Phys.D,1993,27:313-320. |
[12] | Shen Naicheng,Wei Zhiyi,Nie Yuxin.History,present situation and future of optical frquency standard and optical frequencymeasurement[J].Chinese Journal of Quantum Electronics(量子电子学报),2004,21(2):139-149 (in Chinese). |
[13] | Zhou Binquan,Li Fuli.Measurement of laser frequencies with femlosecond mode-locked laser[J].Chinese Journal of Quantum Electronics(量子电子学报),2006,23(6):753-758 (in Chinese). |
[14] | Puchalski M,Moro A M,Pachucki K.Isotope shift of the 3 2S1/2-2 2S1/2 transition in lithium and the nuclear polarizability[J].Phys.Rev.Left.,2006,97:133001(1)-133001(4). |
[15] | Noble G A,Schultz B E,Ming H,et al.Isotope shifts and fine structure of 6,7Li D lines and determination of the relative nuclear charge radius[J].Phys.Rev.A,2006,74:012502-012507. |
[16] | King W H.Isotope Shifts in Atomic Spectra[M].New York:Plenum,1984. |
[17] | Reichert J,Holzwarth R,Udem Th,et al.Measuring the frequency of light with mode-locked lasers[J].Opt.Commun.,1999,172:59-68. |
[18] | Diddams S A,Jones D J,Ye J,et al.Direct link between microwave and optical frequencies with a 300 THz femtosecond laser comb[J].Phys.Rev.Left.,2000,84:5102-5105. |
[19] | Schrama C A,Peik E,Zanthier J V,et al.Novel miniature ion traps[J].Opt.Commun.,1993,101:32-36. |
[20] | Schwedes Ch,Peik E,et al.Narrow-bandwidth diode-laser-based blue and ultraviolet light source[J].Appl.Phys.B,2003,76:143-147. |
[21] | Drever R W P,Hall J L,et al.Laser phase and frequency stabilization using an optical resonator[J].Appl.Phys.B,1983,31:97-105. |
[22] | Bicchi P,Kopystynska A,Meucci M,et al.Energy-pooling ionization via an autoionizing state in indium[J].Phys.Rev.A,1990,41:5257-5260. |
[23] | Schwedes Ch.Experimente zur realisierung eines optischen frequenznormals auf der basis eines einzelnen indiumions[D].Thesis of Munich Maximilians University,2004. |
[24] | Peik E,Abel J,Becket Th,et al.Sideband cooling of ions in radio-frequency traps[J].Phys.Rev.A,1999,60:439-449. |
[25] | Ma L S,Zucco M,Picard S,et al.A new method to determine the absoute mode number of a mode-locked femtosecond-laser comb used for absolute optical freqency measurements[J].IEEE J.Sel.Top.Quant.Elec.,2003,9:1066-1071. |
[26] | Zanthier J V,Becker Th,Eicheneer M,et al.Absolute frequency measurement of the In+ clock transtion with a mode-locked laser[J].Opt.Lett.,2000,25:1729-1731. |
[27] | Schwartz C.Theory of hyperfine structure[J].Phys.Rev.,1955,97:380-395. |
[28] | Rice M,Pound R V.Ratio of the magnetic moments of In115 and In113[J].Phys.Rev.,1957,106:953-953. |
[29] | Eck T G,Knsch P.Hfs of the 5 2P3/2 state of In115 and In113:octupole interactions in the stable isotopes of indium[J].Phys.Rev.,1957,106:958-964. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%