Doughnut shape atom traps with arbitrary inclination
R. Rodríguez y Masegosaa,b, H. Moya–Cessaa, and S. Chávez–Cerdaa
a INAOE, Apartado Postal 51 y 216, 72000 Puebla, Pue. México
b Photonics and Mathematical Optics Group, Tecnológico de Monterrey, Garza Sada 2501, Monterrey, N.L., México 64849
Recibido el 16 de junio de 2005 ]]> Aceptado el 31 de octubre de 2005
Abstract
Since the invention of magneto–optical trap (MOT), there have been several experimental and theoretical studies of the density distribution in these devices. To the best of our knowledge, only horizontal orbital traps have been observed, perpendicular to the coil axis. In this work we report the observation of distributions of trapped atoms in pure circular orbits without a nucleus whose orbital plane is tilted up to 90° with respect to the horizontal plane. We have used a stabilized time phase optical array in our experiments and conventional equipment used for MOT.
Keywords: Atom traps; atom cooling; Bose Einstein condensates; atom guides; magneto–optical traps; radiation pressure; orbital angular moment.
Resumen
Desde la invencion de la trampa magneto–óptica (TMO), ha habido varios estudios teóricos y experimentales sobre la distribución de densidad en tales dispositivos. Las distribuciones logradas han sido solo en forma horizontal, perpendiculares con respecto del eje de la bobina. En este trabajo, reportamos la observacion de distribuciones de trampas atómicas en órbitas circulares sin núcleo cuyo plano orbital es inclinado hasta 90° con respecto del plano horizontal. Hemos usado en nuestros experimentos un arreglo de fase optica estabilizado en tiempo y equipo convencional usado en trampas magneto–opticas.
Descriptores: Trampas atomicas; condensación Bose Einstein; guías atomicas; trampas magneto–ópticas; presión de radiación; momento angular orbital.
]]> PACS: 32.80.–t; 32.80.Lg; 32.80.PJ
DESCARGAR ARTÍCULO EN FORMATO PDF
References
1. T.W. Hansch and A.L. Schawlow, Opt. Comm. 13 (1975) 68. [ Links ]
2. A. Ashkin, Phys. Rev. Lett. 40 (1978) 729. [ Links ]
3. J.E. Bjorkholm, R.R. Freeman, A. Ashkin, and D.B.Pearson, Phys. Rev. Lett. 41 (1978) 1361. [ Links ]
4. A. Ashkin, Phys. Rev. Lett. 25 (1970) 1321. [ Links ]
5. K. Dholakia, Contemporary Physics 39 (1998) 351. [ Links ]
6. D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, Phys. Rev. Lett. 63 (1989) 961. [ Links ]
7. Umakant D. Rapol, Ajay Wasan, and Vasant Natarajan, Phys. Rev. A 64 (2001) 23402. [ Links ]
8. C.D. Wallace et al., J. Soc. Am. B 050703 (1994) 703. [ Links ]
9. T. Walker, D. Sesko, and C. Wieman, Phys. Rev. Lett. 64 (1990) 408. [ Links ]
10. D.W. Sesko. T.G. Walker, and C.E. Wieman, J. OPT. SOC. Am. B 8 (1991) 946. [ Links ]
11. S. Peil et al., Phys. Rev. A 8 (2003) 051603(R). [ Links ]
12. L. Guidoni and P. Verkerk, J. Opt. B 1 (1999) R23. [ Links ]
13. V.S. Bagnato et al.,Phys. Rev. A 48 (1995) 3771. [ Links ]
14. M.T. de Araujo et al., Opt. Comm. 119 (1995) 85. [ Links ]
15. F. Dias Nunes, J.F. Silva, S.C. Zilio, and V.S. Bagnato, Phys. Rev. A 54 (1996) 2271. [ Links ]
16. D. Felinto, L.G. Marcassa, V.S. Bagnato, S.S. Vianna, Phys. Rev. A 60 (1999) 2591. [ Links ]
17. I. Guedes et al.,J. Opt. Soc. Am. B 11 (1994) 1935. [ Links ]
18. D. Felinto, and S.S. Vianna, J. Opt. Soc. Am. B 17 (2000). [ Links ]
19. D. Felinto, H. Regehr, J.W.R. Tabosa, and S.S. Vianna, J. Opt. Soc. Am. B 18 (2001). [ Links ]
20. Reinaldo L. Cavasso Filho et al., Brazilian J. Phys. 33 (2003). [ Links ]
21. A.S. Arnold and P.J. Manson, J.Opt. Soc. Am. B 17 (2000) 497. [ Links ]
22. Yvan Castin and Klaus Molmer, Phys. Rev. Lett. 74 (1995) 3772. [ Links ]
23. R.N. Watts and C.E. Wieman, Opt. Lett. 11 (1986) 291. [ Links ]
24. J. Fortagh, A. Grossmann, T.W. Hansch, and C. Zimmermann, "Fast loading of magneto–optical trap from a pulsed thermal source", 84 (1998) 6499. [ Links ]
25. Harold J. Metcalf, Peter van der Straten, "Laser Cooling and Trapping" (Springer, 1999). [ Links ]
26. A. Rauschenbeutel, H. Schadwinkel, V Gomer, and D. Meschede, Opt. Comm. 148 (1998) 45. [ Links ]
27. Stephen Dale G. , Ph. D. Thesis, University of Connecticut, 1994. [ Links ] ]]>