OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 5 — May. 1, 2000
  • pp: 681–689

Orbital modes in low-density magneto-optical traps

D. Felinto and S. S. Vianna  »View Author Affiliations


JOSA B, Vol. 17, Issue 5, pp. 681-689 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000681


View Full Text Article

Enhanced HTML    Acrobat PDF (192 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The different orbital modes that appear from the misalignment of the laser beams in the xy plane of a low-density magneto-optical trap are studied. Using the circular motion approximation, one can obtain a qualitative description of the phenomenon and can calculate the ring radii, the atom’s velocity in the ring, and the trap parameters in which the rings appear. A careful analysis of some theories previously employed in researching this topic shows that they have extrapolation problems that led to unreasonable conclusions. In particular, we compare the results of the circular motion approximation itself with those obtained from a direct numerical integration of the atomic trajectory. Within this approximation the influence of the increase in the number of trapped atoms over the ring is also investigated, and we observe an instability in a ring-shaped structure when the interaction between the atoms is included.

© 2000 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.7010) Atomic and molecular physics : Laser trapping
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.7010) Lasers and laser optics : Laser trapping

Citation
D. Felinto and S. S. Vianna, "Orbital modes in low-density magneto-optical traps," J. Opt. Soc. Am. B 17, 681-689 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-5-681


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. E. Raab, M. Prentiss, A. Cable, S. Chu, and D. Pritchard, “Trapping of neutral sodium atoms with radiation pressure,” Phys. Rev. Lett. 59, 2631–2634 (1987). [CrossRef] [PubMed]
  2. T. Walker, D. Sesko, and C. Wieman, “Collective behavior of optically trapped neutral atoms,” Phys. Rev. Lett. 64, 408–411 (1990); D. Sesko, T. Walker, and C. Wieman, “Behavior of neutral atoms in a spontaneous force trap,” J. Opt. Soc. Am. B 8, 946–958 (1991). [CrossRef] [PubMed]
  3. L. G. Marcassa, D. Milori, M. Ori, G. I. Surdutovich, S. C. Zilio, and V. S. Bagnato, “Magneto-optical trap for sodium atoms from a vapor cell and observation of spatial modes,” Braz. J. Phys. 22, 3–6 (1992); V. S. Bagnato, L. G. Marcassa, M. Oriá, G. I. Surdutovich, and S. C. Zilio, “Spatial distributions of optically trapped cooled neutral atoms,” Laser Phys. 2, 172–177 (1992).
  4. V. S. Bagnato, L. G. Marcassa, M. Ori, G. I. Surdutovich, R. Vitlina, and S. C. Zilio, “Spatial distribution of atoms in a magneto-optical trap,” Phys. Rev. A 48, 3771–3775 (1993). [CrossRef] [PubMed]
  5. M. T. de Araujo, L. G. Marcassa, S. C. Zilio, and V. S. Bagnato, “Double-ring structure: another variant in the spatial distribution of cold sodium atoms,” Phys. Rev. A 51, 4286–4288 (1995). [CrossRef] [PubMed]
  6. I. Guedes, M. T. de Araujo, D. M. B. P. Milori, G. I. Surdutovich, V. S. Bagnato, and S. C. Zilio, “Forces acting on magneto-optically trapped atoms,” J. Opt. Soc. Am. B 11, 1935–1940 (1994). [CrossRef]
  7. I. Guedes, H. F. Silva Filho, and F. D. Nunes, “Theoretical analysis of the spatial structures of atoms in magneto-optical traps,” Phys. Rev. A 55, 561–567 (1997). [CrossRef]
  8. V. G. Minogin and V. S. Letokov, Laser Light Pressure on Atoms (Gordon & Breach, New York, 1987); S. Stenholm, “The semiclassical theory of laser cooling,” Rev. Mod. Phys. 58, 699–739 (1986). [CrossRef]
  9. K. Lindquist, M. Stephens, and C. Wieman, “Experimental and theoretical study of the vapor-cell Zeeman optical trap,” Phys. Rev. A 46, 4082–4090 (1992). [CrossRef] [PubMed]
  10. M. P. Allen and D. J. Tildesley, Computer Simulation of Liquids (Oxford U. Press, Oxford, UK, 1994).
  11. G. Arfken, Mathematical Methods for Physicists (Academic, San Diego, Calif., 1985).
  12. A. M. Steane, M. Chowdhury, and C. J. Foot, “Radiation force in the magneto-optical trap,” J. Opt. Soc. Am. B 9, 2142–2158 (1992). [CrossRef]
  13. D. Felinto, L. G. Marcassa, V. S. Bagnato, and S. S. Vianna, “Influence of the number of atoms in a ring-shaped magneto-optical trap: observation of bifurcation,” Phys. Rev. A 60, 2591–2594 (1999). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited