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Λ-enhanced gray molasses cooling (Λ-GMC) technique has been widely used in experiments to prepare cold atomic samples below the sub-doppler temperature limit. To meet the experimental requirements of cavity quantum electrodynamics systems, we designed and constructed a wide-range, fast-tuning laser system by integrating tapered amplifiers, fiber phase modulators, etalon, and injection locking amplification techniques and so on. This laser system achieves a maximum tuning range of 600MHz and a frequency tuning speed of 5ns. Based on this laser system, loading atom in a crossed dipole trap assisted by cesium D2 line Λ-GMC cooling in the center of the optical microcavity is studied, various factors affecting the atom loading are mainly as follows: laser duration τ, three-dimensional magnetic field(Bx,By,Bz), single-photon detuning∆, two-photon detuning δ, ratio of cooling beam power to repumping beam power Icool/Irep, and cooling beam power Icooling. The optimal parameters in this system are:τ=7ms,δ=0.2MHZ,∆=5Γ,Icool/Irep=3,Icool=1.2Isat. Comparing to traditional PGC-assisted loading, the number of atoms is increased by about 4 times, and the atomic temperature is reduced from 25μk to 8μk. This experiment provides important insights for preparing ultracold atomic samples and capturing single atom arrays.
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Keywords:
- Λ-enhanced gray molasses cooling /
- doppler temperature limit /
- wide-range frequency tuning /
- cold atom
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[1] Dalibard J, Cohen-Tannoudji C 1989 J Opt Soc Am 6 2023.
[2] Ungar P J, Weiss D S, Riis E, Chu S 1989 J Opt Soc Am 6 2058.
[3] Lett P D, Phillips W D, Rolston S L, Tanner C E, Watts R N, Westbrook C I 1989 J Opt Soc Am 6 2084.
[4] Grynberg G, Courtois J Y 1994 EPL 27 41.
[5] Boiron D, Michaud A, Lemonde P, Castin Y, Salomon C, Weyers S, Szymaniec K, Cognet L, Clairon A 1996 Phys. Rev. A 53 R3734.
[6] Esslinger T, Sander F, Hemmerich A, Hänsch T W, Ritsch H, Weidemüller M 1996 Opt. Lett. 21 991.
[7] Triché C, Verkerk P, Grynberg G 1999 Eur. Phys. J. D 5 225.
[8] Grier A T, Ferrier-Barbut I, Rem B S, Delehaye M, Khaykovich L, Chevy F, Salomon C 2013 Phys. Rev. A 87 063411.
[9] Burchianti A, Valtolina G, Seman J A, Pace E, De Pas M, Inguscio M, Zaccanti M, Roati G 2014 Phys. Rev. A 90 043408.
[10] Sievers F, Kretzschmar N, Fernandes D R, Suchet D, Rabinovic M, Wu S, Parker C V, Khaykovich L, Salomon C, Chevy F 2015 Phys. Rev. A 91 023426.
[11] Colzi G, Durastante G, Fava E, Serafini S, Lamporesi G, Ferrari G 2016 Phy. Rev. A 93 023421.
[12] Shi Z, Li Z, Wang P, Meng Z, Huang L, Zhang J 2018 Chinese Phys. Lett. 35 123701.
[13] Nath D, Easwaran R K, Rajalakshmi G, Unnikrishnan C S 2013 Phys. Rev. A 88 053407.
[14] Bruce G D, Haller E, Peaudecerf B, Cotta D A, Andia M, Wu S, Johnson M Y H, Lovett B W, Kuhr S 2017 J. Phys. B:At. Mol. Opt. Phys. 50 095002.
[15] Chen H Z, Yao, X C, Wu Y P, Liu X P, Wang X Q, Wang Y X, Pan J W 2016 Phys. Rev. A 94 033408.
[16] Rosi S, Burchianti A, Conclave S, Naik D S, Roati G, Fort C, Minardi F 2018 Sci. Rep. 8 1301.
[17] Hsiao Y F, Lin Y J, Chen Y C 2018 Phys. Rev. A 98 033419.
[18] Hsiao Y F, Tsai P J, Chen H S, Lin S X, Hung C C, Lee C H, Chen Y, Chen Y, Yu I, Chen Y C 2018 Phys. Rev. Lett. 120 183602.
[19] Naik D S, Eneriz-Imaz H, Carey M, Freegarde T, Minardi F, Battelier B, Bouyer P, Bertoldi A 2020 Phys. Rev. Res. 2 013212.
[20] Liu Y, Wang Z, Yang P, Wang Q, Fan Q, Guan S, Li G, Zhang P, Zhang T. 2023 Phys. Rev. Lett. 130 173601.
[21] Reiserer A, Nölleke C, Ritter S, Rempe G 2013 Phys. Rev. Lett. 110 223003.
[22] Lounis B, Cohen-Tannoudji C 1992 J. Phys. II France 2 579.
[23] Tuchendler C, Lance A M, Browaeys A, Sortais Y R P, Grangier P 2008 Phys. Rev. A 78 033425.
[24] Brown M O, Thiele T, Kiehl C, Hsu T W, Regal C A 2019 Phys. Rev. X 9 011057.
[25] Huang C, Covey J P, Gadway B 2022 Phys. Rev. Res. 4 013240.
[26] Albrecht B, Meng Y, Clausen C, Dareau A, Schneeweiss P, Rauschenbeutel A 2016 Phys. Rev. A 94 061401.
[27] Schlosser N, Reymond G, Grangier P. 2002 Phys. Rev. Lett. 89 023005.
[28] Grünzweig T, Hilliard A, McGovern M, Andersen M F 2010 Nat. Phys. 6 951.
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