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Diluted magnetic semiconductor (DMS) colloidal nanocrystals demonstrate remarkable magneto-optical properties. However, the behavior of circular polarization of their emission in high magnetic fields remains unclear. We measure…

We studied alignment-to-orientation conversion caused by excited-state level crossings in a nonzero magnetic field of both atomic rubidium isotopes. Experimental measurements were performed on the transitions of the $D_2$ line of rubidium.…

Atomic Physics · Physics 2015-05-27 M. Auzinsh , A. Berzins , R. Ferber , F. Gahbauer , L. Kalvans , A. Mozers , A. Spiss

The impact of the optical field polarization on the spectrum of magnetically-induced transitions, a class of transitions forbidden at zero magnetic field, is studied with a weak-probe sub-Doppler technique. The high spectral resolution of…

Atomic Physics · Physics 2025-02-19 A. Sargsyan , E. Klinger , A. Amiryan , D. Sarkisyan

The temporal evolutions of coherent resonances corresponding to electromagnetically induced transparency (EIT) and absorption (EIA) were observed in a Hanle absorption experiment carried on the $D_{2}$ lines of $% ^{87}$Rb vapor by suddenly…

Quantum Physics · Physics 2007-05-23 P. Valente , H. Failache , A. Lezama

The coherent dark resonance between the hyperfine levels F=1, m=0 and F=2, m=0 of the rubidium ground state has been observed experimentally with the light of a pulsed mode-locked diode laser operating at the D1 transition frequency. The…

Quantum Physics · Physics 2009-10-31 S. Brattke , U. Kallmann , W. -D. Hartmann

The physical interpretation of the spectral line polarization produced by the joint action of the Hanle and Zeeman effects offers a unique opportunity to obtain empirical information about hidden aspects of solar and stellar magnetism. To…

Astrophysics · Physics 2009-06-23 Luca Belluzzi , Javier Trujillo Bueno , Egidio Landi Degl'Innocenti

Level-crossing (LC) resonances in a buffer-gas-filled cesium vapor cell are studied under counterpropagating pump and probe light waves with opposite circular polarizations. The waves excite the D$_1$-line ground-state level $F_g$$=\,$$4$,…

The effect of a magnetic field on the electroluminescence of organic light emitting devices originates from the hyperfine interaction between the electron/hole polarons and the hydrogen nuclei of the host molecules. In this paper, we…

We have studied experimentally and theoretically the impact of various parameters on the characteristics of signals from a two-axis Hanle magnetometer based on the Cs D$_1$ transition illuminated by linearly polarized pump and probe beams…

Atomic Physics · Physics 2025-01-30 Arturs Mozers , Antons Nikolajevs , Florian Gahbauer , Marcis Auzinsh

We use a laser-driven single (In,Ga)As quantum dot (QD) in the dressed state regime of resonance fluorescence ($T = 4$ K) to observe the four $D_1$-transition lines of alkali atomic cesium ($Cs$) vapor at room temperature. We tune the…

Optics · Physics 2015-06-18 S. M. Ulrich , S. Weiler , M. Oster , M. Jetter , A. Urvoy , R. Löw , P. Michler

Americium ($^{241}$Am) with an unpaired proton in the F$_{5/2}$ state exhibits a significant magnetic dipole moment. The dipole can be experimentally measured with application of even modest external magnetic fields, as little as 1G, as a…

Nuclear Experiment · Physics 2025-05-05 C. Scarlett , E. Fischbach , B. Freeman , J. J. Coy , P. Edwards , D. Osborne , J. Edwards , L. Mwibanda , A. Alsayegh

We uncover a highly nontrivial dependence of the spin-noise (SN) resonance broadening induced by the intense probe beam. The measurements were performed by probing the cell with cesium vapor at the wavelengths of the transition…

We consider the stimulated Raman transition between two long-lived states via multiple intermediate states, such as between hyperfine ground states in the alkali-metal atoms. We present a concise treatment of the general, multilevel,…

Quantum Physics · Physics 2010-08-23 James Bateman , André Xuereb , Tim Freegarde

We measure strong magnetic field intensities in a subwavelength gap separating two dielectric resonators. This dimer magnetic antenna is characterized in the GHz spectral regime when considering three conditions of illumination. We detail…

Optics · Physics 2013-07-31 Guillaume Boudarham , Redha Abdeddaim , Nicolas Bonod

We present a combined theoretical and experimental study of magnetic resonance transitions induced by polarization-modulated light in cesium vapor exposed to a transverse magnetic field. Signals are obtained by phase-sensitive analysis of…

Atomic Physics · Physics 2013-12-06 E. Breschi , Z. D. Gruijc , P. Knowles , A. Weis

We study the shape of the coherent backscattering (CBS) cone obtained when resonant light illuminates a thick cloud of laser-cooled rubidium atoms in presence of a homogenous magnetic field. We observe new magnetic field-dependent…

Atomic Physics · Physics 2009-11-07 G. Labeyrie , C. Miniatura , C. A. Mueller , O. Sigwarth , D. Delande , R. Kaiser

Photoexcited K$_3$C$_{60}$ displays several properties reminiscent of equilibrium superconductivity, including transient optical spectra, pressure dependence, and I-V characteristics. However, these observations do not decisively establish…

Superconductivity · Physics 2025-02-28 G. De Vecchi , M. Buzzi , G. Jotzu , S. Fava , T. Gebert , G. Magnani , D. Pontiroli , M. Riccò , A. Cavalleri

We examine the efficacy of Dark-mode plasmonics as a platform for enhanced magneto-optics. Dark-mode of a small particle consists of two co-existing equal-intensity and mutually opposing dipolar excitations. Each of these two opposing…

Optics · Physics 2017-01-18 Y. Mazor , M. Meir , Ben Z. Steinberg

The remarkable properties of (1T-)TiSe$_2$ among the transition metal dichalcogenides have attracted the attention of many researchers due to its peculiar behavior during the charge density wave (CDW) transition. Therefore, it is highly…

Materials Science · Physics 2024-02-08 Shin-ichiro Tanaka , Shigemasa Suga , Keiji Ueno , Keisuke Fukutani , Fumihiko Matsui

A low-light-power theory of nonlinear magneto-optical rotation of frequency-modulated light resonant with a J=1->J'=0 transition is presented. The theory is developed for a Doppler-free transition, and then modified to account for Doppler…

Atomic Physics · Physics 2009-11-10 Yu. P. Malakyan , S. M. Rochester , D. Budker , D. F. Kimball , V. V. Yashchuk