Observation of "Anticrossings" in Optical Resonance Fluorescence

Eck, T. G.; Foldy, L. L.; Wieder, H.

doi:10.1103/physrevlett.10.239

Cited by 107 publications

(22 citation statements)

References 3 publications

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“…In the literature it is known that these features average out when averaging over all molecular orientations [23]. Additionally, so-called "anticrossings" could affect or cause an absence of these peaks [39].…”

Section: High Field Anisotropymentioning

confidence: 99%

Anisotropic magnetoconductance in polymer thin films

et al. 2014

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The dependence of the magnetic field sensitive current on the orientation of the magnetic field has been investigated in organic semiconductor devices where the active layer consists of the poly(p-phenylene vinylene) derivative "Super Yellow." Previous work on Alq 3 suggested that the anisotropy was caused either by anisotropic spin-spin interactions or by anisotropic hyperfine fields, but no discrimination could be made. In the present work, the anisotropy at the hyperfine field scale is best explained by dipolar coupling between the spin of polarons. In addition, a high field anisotropy is found with an opposite sign, different angle, and voltage dependence. Spin density matrix calculations were performed of polaron pair interactions for the low field effect, and a g-mechanism, triplet-polaron, or triplet-triplet interaction for the high field effect. The simulations confirm that the low field anisotropy can indeed be explained by dipolar coupling. However, the proposed models can not entirely account for the high field anisotropy. These results show that, although contemporary models can account for (anisotropic) magnetic field effects in organic semiconductors at low field scales, more experimental and theoretical research of high field effects is highly desirable.

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Section: High Field Anisotropymentioning

confidence: 99%

Anisotropic magnetoconductance in polymer thin films

et al. 2014

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“…For the first time this structure was observed in resonance fluorescence of lithium atoms [4]. As it is known [9], the structure of field spectra in nonlinear transmission of pumping (47) is analogous 30 to the structure in resonance fluorescence [3] s…”

mentioning

confidence: 77%

“…2 § 13]. Owing to the dependence, there are structures in field spectra of NOR, which we shall name "ballast" ones, underlining the energetic aspect of known process of anti-crossing of magnetic sublevels [4,5]. With respect to Raman structures connected with crossings of magnetic sublevels, ballast ones have always opposite sign.…”

Section: Introductionmentioning

confidence: 99%

Sub-collision hyperfine structure of nonlinear-optical resonance with field scanning

Gus'kov¹,

Kovalevsky²,

Rudavets³

et al. 2004

Journal of Molecular Spectroscopy

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Some experimental evidences for methane are produced that the simple transition from frequency scanning of nonlinear-optical resonances to magnetic one may be accompanied with transition from sub-Doppler collisionally broadened structure to sub-collision hyperfine one. It is conditioned by nonlinearity of splitting of hyperfine sublevel for molecules in the adiabatically varied magnetic field and respectively breaking the analogy of magnetic and frequency scannings. The exact calculation of the resonance structure is considered for molecules with only one spin subsystem. The approximately spin-additive calculation of the structure is given for sufficiently fast rotating molecules with greater number of spin subsystems. Within the same approximation an example of hyperfine doubling in the magnetic and electric spectra of nonlinear-optical resonance is considered for fluoromethane.

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“…Общий сигнал антипересечения является суперпозицией трех таких сигналов (с сильным перекрытием) для Li 7 и двух -для Li 6 . Интересно отметить, что согласно (28) сигнал имеет форму лоренцевой линии при любой геометрии опыта; здесь нет того смешивания лоренцевой и диспер-сионной кривых, которое имеет место в экспериментах по пересечению уровней.…”

Section: антипересечения атомных уровней *)unclassified

“…Исследования атомных систем с помощью метода пересечения уров-ней позволили не только получить новые весьма ценные сведения о струк-туре атомных состояний, но и обнаружить ряд новых явлений, а также существенно расширить возможности интерференционной техники. Так появились методы «антипересечения» уровней 6 > '· 8а · в и методы пересече-ния магнитных подуровней атомов в основном состоянии 9 · 10 . Важную роль в теоретической и экспериментальной разработке этих методов сыграли работы Кастлера u и Подгорецкого 8а > б -в .…”

unclassified

Crossing and anticrossing of atomic levels and their use in atomic spectroscopy

Pokozan'ev¹,

Skrotskii²

1972

Usp. Fiz. Nauk

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Observation of "Anticrossings" in Optical Resonance Fluorescence

Cited by 107 publications

References 3 publications

Anisotropic magnetoconductance in polymer thin films

Anisotropic magnetoconductance in polymer thin films

Sub-collision hyperfine structure of nonlinear-optical resonance with field scanning

Crossing and anticrossing of atomic levels and their use in atomic spectroscopy

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