Hyperfine Paschen-Back regime in alkali metal atoms: consistency of two theoretical considerations and experiment

Abstract

Simple and efficient "λ-method" and "λ/2-method" (λis the resonant wavelength of laser radiation) based on nanometric-thickness cell filled with rubidium are implemented to study the splitting of hyperfine transitions of 85Rb and 87Rb D_1 line in an external magnetic field in the range of B = 0.5 - 0.7 T. It is experimentally demonstrated from 20 (12) Zeeman transitions allowed at low B-field in 85Rb (87Rb) spectra in the case of σ+ polarized laser radiation, only 6 (4) remain at B > 0.5 T, caused by decoupling of the total electronic momentum J and the nuclear spin momentum I (hyperfine Paschen-Back regime). The expressions derived in the frame of completely uncoupled basis (J, m_J ; I, m_I) describe very well the experimental results for 85Rb transitions at $B>0.6T(thatisamanifestationofhyperfinePaschen-Backregime).Aremarkableresultisthatthecalculationsbasedontheeigenstatesofcoupled(F,m_F)basis,whichadequatelydescribethesystemforlowmagneticfield,alsopredictreductionofnumberoftransitioncomponentsfrom20to6for85Rb,andfrom12to4for87RbspectrumatB>0.5T.Also,theZeemantransitionsfrequencyshift,frequencyintervalbetweenthecomponentsandtheirslopeversus$B$ are in agreement with the experiment.

10 pages, 13 figures

References in corpus (3)

• Maximal refraction and superluminal propagation in a gaseous nanolayer
• Saturation effects in the sub-Doppler spectroscopy of Cesium vapor confined in an Extremely Thin Cell
• Absolute absorption and dispersion of a rubidium vapour in the hyperfine Paschen-Back regime

Cited by in corpus (21)

• ElecSus: Extension to arbitrary geometry magneto-optics
• Saturated-absorption spectroscopy revisited: atomic transitions in strong magnetic fields ($>$20 mT) with a micrometer-thin cell
• Decoupling of hyperfine structure of Cs $D_1$ line in strong magnetic field studied by selective reflection from a nanocell
• Complete hyperfine Paschen-Back regime at relatively small magnetic fields realized in Potassium nano-cell
• Four-wave mixing in a non-degenerate four-level diamond configuration in the hyperfine Paschen-Back regime
• Absorption spectroscopy and Stokes polarimetry in a ${}^{87}$Rb vapour in the Voigt geometry with a 1.5 T external magnetic field
• Quantitative optical spectroscopy of ${}^{87}$Rb vapour in the Voigt geometry in DC magnetic fields up to 0.4T
• Atomic transitions of Rb, $D_2$ line in strong magnetic fields: hyperfine Paschen-Back regime
• Electromagnetically induced transparency in a V-system with ${}^{87}$Rb vapor in the hyperfine Paschen-Back regime
• Simultaneous two-photon resonant optical laser locking (STROLLing) in the hyperfine Paschen--Back regime
• Zeeman-tunable Modulation Transfer Spectroscopy
• Autler-Townes doublet in single-photon Rydberg spectra of Cesium atomic vapor with a 319 nm UV laser
• Tuneable homogeneous kG magnetic field production using permanent magnets
• Nonlinear Zeeman Effects in the Cavity-Enhanced Emission of Polarised Photons
• Low-drift Zeeman shifted atomic frequency reference
• Strongest Magnetically Induced Transitions in Alkali Metal Atoms with nuclear spin $3/2$
• Rigorous theory of thin-vapor-layer linear optical properties: The case of quenching of atomic polarization upon collisions of atoms with dielectric walls
• Angular momentum alignment-to-orientation conversion in the ground state of Rb atoms at room temperature
• Quantum-router: Storing and redirecting light at the photon level
• Transition cancellations of ${}^{87}$Rb and ${}^{85}$Rb atoms in a magnetic field setting new standards
• Crystal-Field Paschen-Back Effect on Ruby in Ultrahigh Magnetic Fields