57 citations · 337 across the 19 of their papers we have counts for
19 papers
Second-order correlations in directed emissions in sodium atoms
Ara Tonoyan, Sushree Subhadarshinee Sahoo, Anahit Gogyan +4
We report on measurements of second-order intensity correlations of infrared emission under bichromatic excitation at 589.2\,nm and 569.0\,nm of sodium atoms contained…
Observation of magnetically-induced transition intensity redistribution in the onset of the hyperfine Paschen-Back regime
Armen Sargsyan, Emmanuel Klinger, Ara Tonoyan +1
The Zeeman effect is an important topic in atomic spectroscopy. The induced change in transition frequencies and amplitudes finds applications in the Earth-field-range magnetometry…
Formation of narrow atomic lines of Rb in the UV region using a magnetic field
Ara Tonoyan, Armen Sargsyan, Rodolphe Momier +2
Magnetically induced (MI) transitions (F = 1 F= 3) of Rb D line are among the most promising atomic transitions for applications in l…
Formation of strongly shifted EIT resonances using "forbidden" transitions of Cesium
Armen Sargsyan, Ara Tonoyan, Rodolphe Momier +2
Atomic transitions satisfying (where stands for excited and stands for ground state) of alkali atoms have zero probability in zero magnetic fie…
Photoionization cross sections of ultracold Sr in P and S states at 390 nm and the resulting blue-detuned magic wavelength optical lattice clock constraints
Marcin Witkowski, Sławomir Bilicki, Marcin Bober +4
We present the measurements of the photoionisation cross sections of the excited P and S states of ultracold Sr atoms at 389.889 nm wavelength, which is the…
Wide range linear magnetometer based on a sub-microsized K vapor cell
M. Auzinsh, A. Sargsyan, A. Tonoyan +4
K atoms have the smallest ground state () hyperfine splitting of all the most naturally abundent alkali isotopes and, consequently, the smallest characteristic ma…
Coherent Optical Processes on Cs D line Magnetically Induced Transitions
Armen Sargsyan, Arevik Amiryan, Ara Tonoyan +2
The increased spectral resolution allowed by the use of extremely thin vapor cells has led to the observation of interesting behaviour of alkali transitions when placed in a magnet…
Strongest Magnetically Induced Transitions in Alkali Metal Atoms with nuclear spin
Armen Sargsyan, Ara Tonoyan, Rodolphe Momier +2
The probabilities of atomic transitions between a ground and an excited level of line of any alkali metal atom are zero when no external magne…
Circular dichroism in atomic vapors: magnetically induced transitions responsible for two distinct behaviors
Armen Sargsyan, Arevik Amiryan, Ara Tonoyan +2
Atomic transitions of alkali metals for which the condition is satisfied have null probability in a zero magnetic field, while a giant increase can occur when an e…
Dark resonance formation with magnetically-induced transitions: extension of spectral range and giant circular dichroism
Armen Sargsyan, Ara Tonoyan, Aram Papoyan +1
Dark resonances were formed via electromagnetically induced transparency for the first time involving magnetically-induced atomic transitions of alkali metal atom, whic…
Hyperfine Paschen-Back regime of Potassium D line observed by Doppler-free spectroscopy
Armen Sargsyan, Emmanuel Klinger, Ara Tonoyan +2
Selective reflection of a laser radiation from an interface formed by a dielectric window and a potassium atomic vapour confined in a nano-cell with nm gap thickness is imple…
Symmetry breaking exhibition by magnetic field induced explicit circular dichroism
A. Tonoyan, A. Sargsyan, E. Klinger +5
In this letter we demonstrate universal symmetry breaking by means of magnetically induced circular dichroism. Magnetic field induces forbidden at zero field atomic transitions bet…
Theoretical Investigation of K States Behavior under Strong Magnetic Field and Polarized Laser Field
Ara Tonoyan
Theoretically research of the behavior of K and lines for polarized resonant light is conducted in the presence of strong magnetic field when the total elect…
Magnetic field--induced modification of selection rules for Rb D line monitored by selective reflection from a vapor nanocell
Emmanuel Klinger, Armen Sargsyan, Ara Tonoyan +4
Magnetic field-induced giant modification of the probabilities of five transitions of of Rb and three transitions of $5S_{1/2},…
Decoupling of hyperfine structure of Cs line in strong magnetic field studied by selective reflection from a nanocell
Armen Sargsyan, Emmanuel Klinger, Grant Hakhumyan +4
Decoupling of total electronic and nuclear spin moments of Cs atoms in external magnetic field for the case of atomic line, leading to onset of the hyperfine Paschen-Back reg…
Complete hyperfine Paschen-Back regime at relatively small magnetic fields realized in Potassium nano-cell
A. Sargsyan, A. Tonoyan, G. Hakhumyan +3
A one-dimensional nano-metric-thin cell (NC) filled with potassium metal has been built and used to study optical atomic transitions in external magnetic fields. These studies bene…
Atomic transitions of Rb, line in strong magnetic fields: hyperfine Paschen-Back regime
A. Sargsyan, A. Tonoyan, G. Hakhumyan +3
An efficient -method ( is the resonant wavelength of laser radiation) based on nanometric-thickness cell filled with rubidium is implemented to study the splitting of hyper…
Saturated-absorption spectroscopy revisited: atomic transitions in strong magnetic fields (20 mT) with a micrometer-thin cell
A. Sargsyan, A. Tonoyan, R. Mirzoyan +3
The existence of cross-over resonances makes saturated-absorption spectra very complicated when external magnetic field B is applied. It is demonstrated for the first time that the…
Giant modification of atomic transitions probabilities induced by magnetic field: forbidden transitions become predominant
A. Sargsyan, A. Tonoyan, G. Hakhumyan +3
Magnetic field-induced giant modification of probabilities for seven components of 6S1/2 (Fg=3) - 6P3/2 (Fe=5) transition of Cs D2 line forbidden by selection rules is observed exp…