Blue laser cooling transitions in Tm I

Simple item page
dc.creatorKolachevsky, N.
dc.creatorAkimov, A.
dc.creatorTolstikhina, I.
dc.creatorChebakov, K.
dc.creatorSokolov, A.
dc.creatorRodionov, P.
dc.creatorKanorski, S.
dc.creatorSorokin, V.
dc.date2007-07-16
dc.date2007-12-30
dc.date.accessioned2026-07-07T08:51:42Z
dc.date.available2026-07-07T08:51:42Z
dc.descriptionWe have studied possible candidates for laser cooling transitions in $^{169}$Tm in the spectral region 410 -- 420 nm. By means of saturation absorption spectroscopy we have measured the hyperfine structure and rates of two nearly closed cycling transitions from the ground state $4\textrm{f}^{13}6\textrm{s}^2(^2\textrm{F}_0)(J_g=7/2)$ to upper states $4\textrm{f}^{12}(^3\textrm{H}_5)5\textrm{d}_{3/2}6\textrm{s}^2(J_e=9/2)$ at 410.6 nm and $4\textrm{f}^{12}(^3\textrm{F}_4)5\textrm{d}_{5/2}6\textrm{s}^2(J_e=9/2)$ at 420.4 nm and evaluated the life times of the excited levels as 15.9(8) ns and 48(6) ns respectively. Decay rates from these levels to neighboring opposite-parity levels are evaluated by means of Hartree-Fock calculations. We conclude, that the strong transition at 410.6 nm has an optical leak rate of less then $2\cdot10^{-5}$ and can be used for efficient laser cooling of $^{169}$Tm from a thermal atomic beam. The hyperfine structure of two other even-parity levels which can be excited from the ground state at 409.5 nm and 418.9 nm is also measured by the same technique. In addition we give a calculated value of $7(2)$ s$^{-1}$ for the rate of magnetic-dipole transition at 1.14 $μ$m between the fine structure levels $(J_g=7/2)\leftrightarrow(J'_g=5/2)$ of the ground state which can be considered as a candidate for applications in atomic clocks.
dc.description8 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0707.2280
dc.identifierhttp://arxiv.org/abs/0707.2280
dc.identifierAppl. Phys. B 89, 589-594 (2007)
dc.identifierdoi:10.1007/s00340-007-2835-z
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145024
dc.subjectOptics
dc.titleBlue laser cooling transitions in Tm I
dc.typetext

Files

Collections

arXiv