In this work we point out a theoretical picture accounting for some unpredicted trapping conditions that have been observed-but not satisfactorily explained-in the past and have been recently confirmed by our experiments, We have realized a sodium magneto-optical trap working on the 3(2)S(1/2)(F=1)-->3(2)P(3/2)(F'=0) transition that, according to the usually accepted model, should not work. Our results, with respect to the previous unexplained observations, support more stringent conclusions because our experimental setup gives us the possibility to repump atoms from the F=2 state using D-1 transitions. This definitely excludes that the repumping frequency may play a role in the trap dynamics. A peculiar perturbation approach allows us to demonstrate that the confinement force originates, in this case, from a magnetically induced level-mixing effect. Moreover, we describe separately the nature of damping and confining forces and we recognize that in this case they are due to different transitions. Trap simulations based on a dynamical three-dimensional model are presented, which quantitatively reproduce our experimental results.
Nasyrov, K., Biancalana, V., Burchianti, A., Calabrese, R., Marinelli, C., Mariotti, E., et al. (2001). Magneto-Optical Trap Operating on a Magnetically Induced Level-Mixing Effect. PHYSICAL REVIEW A, 64(2), 023412-1-023412-9 [10.1103/PhysRevA.64.023412].
Magneto-Optical Trap Operating on a Magnetically Induced Level-Mixing Effect
Biancalana, V.;Marinelli, C.;Mariotti, E.;Moi, L.
2001-01-01
Abstract
In this work we point out a theoretical picture accounting for some unpredicted trapping conditions that have been observed-but not satisfactorily explained-in the past and have been recently confirmed by our experiments, We have realized a sodium magneto-optical trap working on the 3(2)S(1/2)(F=1)-->3(2)P(3/2)(F'=0) transition that, according to the usually accepted model, should not work. Our results, with respect to the previous unexplained observations, support more stringent conclusions because our experimental setup gives us the possibility to repump atoms from the F=2 state using D-1 transitions. This definitely excludes that the repumping frequency may play a role in the trap dynamics. A peculiar perturbation approach allows us to demonstrate that the confinement force originates, in this case, from a magnetically induced level-mixing effect. Moreover, we describe separately the nature of damping and confining forces and we recognize that in this case they are due to different transitions. Trap simulations based on a dynamical three-dimensional model are presented, which quantitatively reproduce our experimental results.File | Dimensione | Formato | |
---|---|---|---|
PRA 64 2001.pdf
non disponibili
Tipologia:
Altro materiale allegato
Licenza:
NON PUBBLICO - Accesso privato/ristretto
Dimensione
221.35 kB
Formato
Adobe PDF
|
221.35 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11365/3455
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo