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Titolo:
Ultrasensitive two-photon spectroscopy based on long spin-relaxation time in a dark optical trap
Autore:
Khaykovich, L; Friedman, N; Baluschev, S; Fathi, D; Davidson, N;
Indirizzi:
Weizmann Inst Sci, Dept Phys & Complex Syst, IL-76100 Rehovot, Israel Weizmann Inst Sci Rehovot Israel IL-76100 Syst, IL-76100 Rehovot, Israel
Titolo Testata:
EUROPHYSICS LETTERS
fascicolo: 4, volume: 50, anno: 2000,
pagine: 454 - 459
SICI:
0295-5075(200005)50:4<454:UTSBOL>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
FREQUENCY-MODULATION; ATOMS; LASER; RUBIDIUM; BEAM; TRANSITIONS; RESONANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Khaykovich, L Weizmann Inst Sci, Dept Phys & Complex Syst, IL-76100 Rehovot, Israel Weizmann Inst Sci Rehovot Israel IL-76100 Rehovot, Israel
Citazione:
L. Khaykovich et al., "Ultrasensitive two-photon spectroscopy based on long spin-relaxation time in a dark optical trap", EUROPH LETT, 50(4), 2000, pp. 454-459

Abstract

We propose a new spectroscopic method fur measuring weak transitions in cold and trapped atoms, which exploits the long spin relaxation times and tight spatial confinement offered by dark optical traps to achieve extremely high sensitivity. We demonstrate our scheme by measuring a 5S(1/2) --> 5D(5/2) two-photon transition in cold Rb atoms trapped in a new single-beam darkoptical trap, using an extremely weak probe laser power of 25 mu W. We mere able to measure transitions with as small excitation rate as < 0.1 s(-1),using 10(7) fold quantum amplification of the transition rate due to spin shelving anti normalized detection with a strong cycling transition.

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Documento generato il 06/04/20 alle ore 02:06:02