Gray molasses cooling
WebAug 26, 2024 · Gray molasses cooling of. K atoms in optical tweezers. Robust cooling and nondestructive imaging are prerequisites for many emerging applications of neutral … WebOct 12, 2024 · Abstract We demonstrate loading of SrF molecules into an optical dipole trap (ODT) via in-trap Λ -enhanced gray molasses cooling. We find that this cooling can be optimized by a proper choice of relative ODT and cooling beam polarizations.
Gray molasses cooling
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Gray molasses is a method of sub-Doppler laser cooling of atoms. It employs principles from Sisyphus cooling in conjunction with a so-called "dark" state whose transition to the excited state is not addressed by the resonant lasers. Ultracold atomic physics experiments on atomic species with poorly … See more Like Sisyphus cooling, the cooling mechanism of gray molasses relies on a two-photon Raman-type transition between two hyperfine-split ground states mediated by an excited state. Orthogonal superpositions of … See more Dressed-State Picture Denote the two ground states and the excited state of the electron $${\displaystyle g_{-1}\rangle , g_{1}\rangle ,}$$ See more • Sisyphus cooling • Raman spectroscopy See more WebJun 3, 2024 · Ding and his fellow researchers tried a well-established technique called gray molasses cooling on the molecule—with some surprising results. “Because molecules like to turn dark with photon scattering, finding a cooling technique that works by using dark states can be a natural way forward.
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WebFeb 4, 2024 · Taken together, the successive gray molasses pulses cool all external degrees of freedom, which leads to an increase of the phase-space density (PSD) by a factor of ≈250, allowing to reach a high final PSD of ≈1.7×10−3. These experiments are performed within an optical dipole trap, in which gray molasses works as well as it does … WebThe requisite cooling can alternatively be provided by -enhanced gray molasses (GM) on the D 1 transition [15], which has limiting temperatures far below those of the 39 K D 2 bright molasses. The ...
WebDec 14, 2016 · Gray molasses is a powerful tool for sub-Doppler laser cooling of atoms to low temperatures. For alkaline atoms, this technique is commonly implemented with cooling lasers which are blue-detuned from either the D 1or D 2line. Here we show that efficient gray molasses can be implemented on the D 2line of 40K with red-detuned lasers.
WebTurn to Gray's Heating Oil in Maine when you want reliable heating services and fuel delivery. Whether you want a propane boiler installed or heating oil automatically … corso\\u0027s arctic outfitWebgray-molasses Sisyphus cooling on the F =2→ F =2 transition, and red-detuned D2 repumping light, which gives the trapping force. It is characterized by a higher density and a much lower temperature as compared to standard compressed-MOT using only D2 light [13,14]. We then show deep sub-Doppler cooling in pure D1 gray optical molasses. By ... bray women\u0027s refugeWebGray molasses cooling of 39K atoms in optical tweezers Jackson Ang’ong’a , Chenxi Huang, Jacob P. Covey, * and Bryce Gadway † Department of Physics, University of Illinois at Urbana ... corso tennis bambiniWebOct 15, 2013 · First, a new compressed-MOT configuration is taking advantage of gray molasses type cooling induced by blue-detuned D1 light. It yields an optimized density … corso\\u0027s flower and garden centerWebApr 12, 2024 · Abstract. Gray molasses is a powerful tool for sub-Doppler laser cooling of atoms to low temperatures. For alkaline atoms, this technique is commonly implemented … corso\\u0027s flower and garden center sanduskyWebSep 12, 2024 · We report on the simultaneous sub-Doppler laser cooling of 6Li and 7Li isotopes using gray molasses operating on their respective D1 atomic transitions. For 7Li we show that the sub-Doppler cooling can be achieved with two distinct Λ -type transitions, where the upper level can be either of the two 22P 1/2 hyperfine states. corso\u0027s barber shop rochester nyWebJun 18, 2014 · We use a gray molasses operating on the D$_1$ atomic transition to produce degenerate quantum gases of $^ {6}$Li with a large number of atoms. This sub-Doppler cooling phase allows us to lower the initial temperature of 10$^9$ atoms from 500 to 40 $\mu$K in 2 ms. corso\\u0027s barber shop rochester ny