Peculiarities of the coherent population trapping resonance in the fluorescence obtained in a coated⁸⁷Rb cell in the presence of transverse magnetic field: theory and experiment

Abstract

We present an experimental and theoretical investigation of the influence of the transverse magnetic field (TMF) on the coherent population trapping resonances obtained on the Zeeman sublevels of the D 1 line of 87 Rb in a paraffin-coated vacuum cell. It is shown that a TMF changes the shape and sign of the resonance or destroys it completely. The role of the different rank polarization moments in the integral registered fluorescent signal in the presence of stray magnetic fields is clarified using numerical simulations.

Coherent optical spectroscopy characterization of the magnetic properties of oriented Fe3O4 nanoparticles

“…When the sample is situated in the XZand the YZ-planes, it causes a rather homogeneous MF along 0Z and a far smaller gradient along the 0X and 0Y-axis. The difference of the resonance widths is also due to the variation of the radial field created in the three sample positions [9,10]. When using miniaturized cells with alkali metal vapors, the situation changes and the recorded values of the magnetic field will characterize the sample locally.…”

Нелинейный магнитооптический резонанс в парах -=SUP=-87-=/SUP=-Rb: влияние паразитных магнитных полей и интенсивности возбуждающего излучения на основные характеристики эффекта в ячейках с антирелаксационным покрытием

“…Второй член уравнения (1) описывает перенос заселенности и зеемановской когерентности с верхнего уровня ( f ) на нижний (ϕ) со скоростью Ŵ κ f ϕ за счет спонтанного испускания. Согласно [26] и с учетом нормировки Дьяконова для неприводимых тензорных операторов [36] имеем:…”

Double Hanle resonance dependence on light polarization angle and transverse magnetic field direction

“…The light-induced atomic coherence allows us to observe a nonlinear magneto-optical resonance (Hanle * Author to whom any correspondence should be addressed. resonance) as a function of scanning magnetic field, either by measuring the light transmission [5] or absorption [7] through the atomic medium. Depending on the hyperfine angular momentum of ground (F g ) and excited (F e ) states of the atomic medium, generally, two types of Hanle resonances are observed: dark (F g ⩾ F e ) and bright (F g < F e ) resonances [8].…”

“…However, several groups have shown that the splitting of the Hanle resonance can occur with or without buffer gas collisions using an elliptically polarized light [16,23] and a linearly polarized light consisting of π-polarization [7,17,20,24]. With a π-polarized light, no Hanle resonance signal is obtained in the absence of TMF [20].…”