Reduced optical shielding of collisional loss for laser-cooled atoms

Y. B. Band, Inbal Tuvi-Arad

Research output: Contribution to journalArticlepeer-review


Collisional loss rates of ultracold atoms in a laser trap (formed by red-detuned laser beams) can be suppressed by using a sufficiently intense blue-detuned optical shielding laser to repel the atoms before they collide. We present calculations that reveal an additional mechanism for collisional loss in the presence of a blue-detuned laser that reduces optical shielding as the blue-detuned laser intensity increases, and even causes enhancement of collisional loss effects with increased blue-detuned intensity. This mechanism can strongly affect the saturation of the optical shielding.

Original languageEnglish
Pages (from-to)R4329-R4332
JournalPhysical Review A
Issue number6
StatePublished - 1995
Externally publishedYes


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