TY - JOUR
T1 - Fluorescence monitoring of laser induced population changes of 6P and 6D levels in cesium vapor
AU - Pappas, Dimitri
AU - Pixley, Nathan C.
AU - Smith, Benjamin W.
AU - Winefordner, James D.
N1 - Funding Information:
The authors would like to thank Denis Boudreau for providing an updated version of the DensMat software, and Ove Axner and Nicolo Omenetto for their fruitful input concerning our observations. The authors also acknowledge the US Department of Energy (Grant DE-FG02-99ER14960) and the National Institutes of Health (Grant HL 63965-01) for financial support.
PY - 2000/9/1
Y1 - 2000/9/1
N2 - Observations of enhancement and reduction of the fluorescence intensity in the continuous-wave excitation of Cs atomic vapor is reported. The reduction is due to a depopulation of the 62p3/2o state upon illumination of a Cs vapor cell with light corresponding to the 62P3/2o→62D5/2 transition (917.23 nm). Collisional relaxation of the 62D5/2 atoms to the 62D3/2 state, followed by radiative decay to the 62P1/2o state (876.14 nm), creates an increase in the population of the 62P1/2o state. The increase in the excited state population results in an increase in the fluorescence intensity of the 62P1/2o→62S1/2 transition (894.35 nm). These laser induced population changes, monitored by the decrease or increase of the corresponding fluorescence signals, were modeled using a simplified density matrix formalism, which allowed an order of magnitude estimate of the rates of level mixing between 62D states and 62P states.
AB - Observations of enhancement and reduction of the fluorescence intensity in the continuous-wave excitation of Cs atomic vapor is reported. The reduction is due to a depopulation of the 62p3/2o state upon illumination of a Cs vapor cell with light corresponding to the 62P3/2o→62D5/2 transition (917.23 nm). Collisional relaxation of the 62D5/2 atoms to the 62D3/2 state, followed by radiative decay to the 62P1/2o state (876.14 nm), creates an increase in the population of the 62P1/2o state. The increase in the excited state population results in an increase in the fluorescence intensity of the 62P1/2o→62S1/2 transition (894.35 nm). These laser induced population changes, monitored by the decrease or increase of the corresponding fluorescence signals, were modeled using a simplified density matrix formalism, which allowed an order of magnitude estimate of the rates of level mixing between 62D states and 62P states.
UR - http://www.scopus.com/inward/record.url?scp=0034274526&partnerID=8YFLogxK
U2 - 10.1016/S0584-8547(00)00241-X
DO - 10.1016/S0584-8547(00)00241-X
M3 - Article
AN - SCOPUS:0034274526
VL - 55
SP - 1503
EP - 1509
JO - Spectrochimica Acta - Part B Atomic Spectroscopy
JF - Spectrochimica Acta - Part B Atomic Spectroscopy
SN - 0584-8547
IS - 9
ER -