Nonlinear radiation imprisonment in magneto-optical vapor traps

We analyze nonlinear radiation imprisonment (RI) effects in an optically thick vapor in different temperature regimes. An analytical approach is proposed to treat nonlinear decay problems. Special attention is paid to vapor samples having curvilinear geometries (cylinder, sphere) and being excited by a strong laser pulse. We derive a number of new formulas for different radiative trapping factors as functions of opacity and propose a general approach for RI evaluation allowing us to deal with samples both at room and low, or very low, temperatures, such as those customarily achieved in magneto-optical trap (MOT) experiments. As a result, we predict a "subnatural" decay of radiation escaping from cold vapors, which can be envisioned as the basis for a sensitive and reliable MOT diagnostic tool.

Molisch, AndreasLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)es-amo (författare)
Fuso, F. (författare)
Allegrini, M. (författare)
Ekers, A. (författare)
Institutionen för elektro- och informationsteknikInstitutioner vid LTH (creator_code:org_t)

Ingår i:Physical Review A (Atomic, Molecular and Optical Physics)77:6, s. 11-111050-2947

Av författaren/redakt...: Bezuglov, N. N.; Molisch, Andreas; Fuso, F.; Allegrini, M.; Ekers, A.

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