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Modulation of photon echo intensity by pulsed non-uniform magnetic fields

Y.P. Wang, D.M. Boye, John E. Rives +1 more

Journal of LuminescenceJan 1, 199012 citations

Long-lived dark coherence brought to light by magnetic-field controlled photon echo

I. A. Solovev, Iskander I. Yanibekov, Yu. P. Efimov +5 more

Larmor precession of the quasiparticle spin about a transverse magnetic field leads to the oscillations in the spontaneous photon echo signal due to the shuffling of the optical coherence between optically accessible (bright) and inaccessible (dark) states. Here we report on a new nonoscillating photon echo regime observed in the presence of nonequal dephasing rates of bright and dark states. This regime enables the observation of the long-lived dark optical coherence. As a simple mechanical analogy, we suggest a charged particle moving in the magnetic field through the medium with anisotropic viscous friction. We demonstrate the dark coherence retrieval in the spontaneous photon echo from excitons in the InGaAs/GaAs quantum well.Larmor precession of the quasiparticle spin about a transverse magnetic field leads to the oscillations in the spontaneous photon echo signal due to the shuffling of the optical coherence between optically accessible (bright) and inaccessible (dark) states. Here we report on a new nonoscillating photon echo regime observed in the presence of nonequal dephasing rates of bright and dark states. This regime enables the observation of the long-lived dark optical coherence. As a simple mechanical analogy, we suggest a charged particle moving in the magnetic field through the medium with anisotropic viscous friction. We demonstrate the dark coherence retrieval in the spontaneous photon echo from excitons in the InGaAs/GaAs quantum well.

arXiv:2010.08369Physical review. B./Physical review. BJun 17, 20217 citations

Photon echo in gases: From the non-Faraday rotation to unpolarized echo

Н. Н. Рубцова, Igor V. Yevseyev

A retrospective review of both theoretical and experimental works on photon echo in gases in the presence of longitudinal magnetic fields is presented from the viewpoint of new possibilities opened by this research for polarization echo spectroscopy of gases. The main attention is given to the physical scenario of the magnetic field’s effect on the properties of the photon echo. New results on the photon echo and stimulated photon echo in ytterbium vapor at the 1 ↔ 0 transition in the presence of the longitudinal magnetic field whose strength ranges from weak to strong are presented. Possible applications of the magnetic field effects for optical data storage and processing are analyzed.A retrospective review of both theoretical and experimental works on photon echo in gases in the presence of longitudinal magnetic fields is presented from the viewpoint of new possibilities opened by this research for polarization echo spectroscopy of gases. The main attention is given to the physical scenario of the magnetic field’s effect on the properties of the photon echo. New results on the photon echo and stimulated photon echo in ytterbium vapor at the 1 ↔ 0 transition in the presence of the longitudinal magnetic field whose strength ranges from weak to strong are presented. Possible applications of the magnetic field effects for optical data storage and processing are analyzed.

Laser PhysicsMar 1, 20078 citations

Photon echo in a magnetic field at small areas of the exciting pulses

I. V. Evseev, V. M. Ermachenko

Optics and SpectroscopyDec 1, 19791 citation

The application of the weak magnetic field pulse to measure g-factors of ground and excited optical states by a photon echo method

V. N. Lisin, Шегеда Анатолий Михайлович, В. В. Самарцев

A new scheme of the definition of g-factors as ground and excited optical states of a paramagnetic ion in zero external constant magnetic field has been proposed and experimentally realized in optical systems in which the Zeeman effect is manifested. A pulse of a weak magnetic field leads to the occurrence of relative phase shifts of the excited dipoles and, as a consequence, to modulation of a photon echo wave form if the magnetic pulse overlaps in time with the echo pulse. The modulation periods of the wave form depend on polarization of the laser light which excites the photon echo. The values of these periods for σ - and π -laser light polarization have been measured and then the g-factors of the ground 4 I 15/2 and excited 4 F 9/2 states of the Er 3+ ion in the LuLiF 4 and the YLiF 4 matrices have been determined. The g-factor values have been compared with the known literary data.A new scheme of the definition of g-factors as ground and excited optical states of a paramagnetic ion in zero external constant magnetic field has been proposed and experimentally realized in optical systems in which the Zeeman effect is manifested. A pulse of a weak magnetic field leads to the occurrence of relative phase shifts of the excited dipoles and, as a consequence, to modulation of a photon echo wave form if the magnetic pulse overlaps in time with the echo pulse. The modulation periods of the wave form depend on polarization of the laser light which excites the photon echo. The values of these periods for σ - and π -laser light polarization have been measured and then the g-factors of the ground 4 I 15/2 and excited 4 F 9/2 states of the Er 3+ ion in the LuLiF 4 and the YLiF 4 matrices have been determined. The g-factor values have been compared with the known literary data.

arXiv:1410.6941Laser Physics LettersFeb 1, 201411 citations

Excitation mechanism of additional signals of photon and electron spin echo

A. I. Siraziev, N. K. Solovarov

Optics and SpectroscopyAug 1, 19890 citations

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