메뉴 건너뛰기




Volumn 1, Issue 3, 1998, Pages 239-242

Pulsed polarization gradient cooling in an optical dipole trap with a Laguerre-Gaussian laser beam

Author keywords

[No Author keywords available]

Indexed keywords

ATOM LASERS; ATOMS; COOLING; EVAPORATIVE COOLING SYSTEMS; GAUSSIAN BEAMS; POLARIZATION; PULSED LASERS;

EID: 0004738920     PISSN: 14346060     EISSN: None     Source Type: Journal    
DOI: 10.1007/s100530050088     Document Type: Article
Times cited : (12)

References (21)
  • 10
    • 85034188868 scopus 로고    scopus 로고
    • note
    • 1/2, F = 2 ground states, and the rate of spontaneous emission decreases to about two-third of that with the repumping beam. Also, a factor of 2 reduction of the population in the upper hyperfine ground state correspondingly reduces the rate of ground-state hyperfine-changing collisions [17,18] to half. We assume these were the main reason for the extension of the trap lifetime.
  • 11
    • 0000981359 scopus 로고
    • Laser Cooling and Trapping
    • See Special issue on Laser Cooling and Trapping, edited by S. Chu and C. Wieman, J. Opt. Soc. Am. B 61 (1989).
    • (1989) J. Opt. Soc. Am. B , vol.61 , Issue.SPEC. ISSUE
    • Chu, S.1    Wieman, C.2
  • 14
    • 85034173787 scopus 로고    scopus 로고
    • note
    • For a short trapping time (< 10 ms) the number of remaining atoms in the dipole trap could not be deduced directly from the TOF signals because we could not distinguish between the atoms from the dipole trap and those from the MOT.
  • 15
    • 85118959699 scopus 로고    scopus 로고
    • note
    • 8). However the present loading efficiency was almost the same as the previous one (∼ 30%).
  • 16
    • 85034175190 scopus 로고    scopus 로고
    • note
    • The time constant of the trap loss due to background gas collisions was 1.4 s, which was determined from a collection profile of the MOT.
  • 17
    • 85034185687 scopus 로고    scopus 로고
    • note
    • As mentioned in the previous work [7], the temperature of the dipole trap without any cooling was determined by the potential height of the doughnut beam. The potential height was almost inversely proportional to the detuning of the doughnut beam. The present detuning of +42 GHz was smaller than that in our previous work of +57 GHz, resulting in increase of the trap temperature from 18 μK to 25 μK.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.