Phys. Rev. A 55, 1217–1223 (1997)Dark-state cooling in the presence of gravity: Gravitational limit of laser coolingReceived 24 June 1996; published in the issue dated February 1997 Dark-state cooling of atoms in the presence of a uniform external (gravity) field is investigated. The external field leads to a finite lifetime for the dark state and thereby to a lower limit for the temperatures obtainable. The minimum temperature in the presence of a gravity field is found to be kBTgrav∼Mgλ/2π (where M is the atom mass, λ the wavelength of the cooling laser). This limit is shown to be a universal limit for any laser-cooling scheme. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.55.1217
DOI:
10.1103/PhysRevA.55.1217
PACS:
32.80.Pj, 03.65.Bz, 42.50.Vk
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.