Broadband vibrational cooling of cold cesium molecules: Theory and experiments

D. Sofikitis, A. Fioretti, S. Weber, M. Viteau, A. Chotia, R. Horchani, M. Allegrini, B. Chatel, D. Comparat, P. Pillet*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

5 اقتباسات (Scopus)

ملخص

The use of a broadband, frequency shaped femtosecond laser on translationally cold cesium molecules has recently demonstrated to be a very efficient method of cooling also the vibrational degree of freedom. A sample of cold molecules, initially distributed over several vibrational levels, has thus been transfered into a single selected vibrational level of the singlet X 1Σg ground electronic state. Our method is based on repeated optical pumping by laser light with a spectrum broad enough to excite all populated vibrational levels but limited in its frequency bandwidth with a spatial light modulator. In such a way we are able to eliminate transitions from the selected level, in which molecules accumulate. In this paper we briefly report the main experimental results and then address, in a detailed way by computer simulations, the perspectives for a "complete" cooling of the molecules, including also the rotational degree of freedom. Since the pumping process strongly depends on the relative shape of the ground and excited potential curves, ro-vibrational cooling through different excited states is theoretically compared.

اللغة الأصليةEnglish
الصفحات (من إلى)149-156
عدد الصفحات8
دوريةChinese Journal of Chemical Physics
مستوى الصوت22
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرPublished - 2009
منشور خارجيًانعم

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