Optical dephasing over a wide temperature range in Eu3+ -doped silicate glass

Gladenkova, S.N.; Osad’ko, I. S.

doi:10.1016/0009-2614(91)90448-i

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…In recent years the effects of two-level systems and long-living pseudo-local modes on the ZPLs in amorphous solids have been studied in detail by the method of single-molecule spectroscopy (see e.g. [25][26][27]).…”

Section: Introductionmentioning

confidence: 99%

Zero-phonon lines of systems with different dimensions and unconventional vibronic interactions

Hizhnyakov

2012

J. Phys.: Condens. Matter

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The standard theory of the optical spectra of impurity centres in solids predicts the Lorentzian shape of the zero-phonon lines to have temperature-dependent position and width. However, in recent years different systems, including ones of reduced dimension, have been found, in which remarkable deviations from the standard laws have been observed. Generalizations of the theory to these systems are presented. Among other things, the quantum liquid 3He doped by optical centres is considered.

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Section: Introductionmentioning

confidence: 99%

Zero-phonon lines of systems with different dimensions and unconventional vibronic interactions

Hizhnyakov

2012

J. Phys.: Condens. Matter

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“…20 ) But when a molecules gets spatially close to sample surface, there can be an increase in coupling V = aUR as well. 20 ) But when a molecules gets spatially close to sample surface, there can be an increase in coupling V = aUR as well.…”

Section: Discussionmentioning

confidence: 99%

“…According to (4), when W becomes very large, the half-width of the ZPL stops growing with W (one example where this 'saturation' of the ZPL width manifests itself is the optical line shape of paramagnetic crystals upon increasing the temperature). 20 However, when a molecule gets spatially close to the sample surface, there can be an increase in coupling V ¼ aUR as well. This coupling is not quadratic, but linear in phonon operators and thus does not affect the width of the ZPL.…”

Section: Discussionmentioning

confidence: 99%

Fluorescence microscopy and spectroscopy of subsurface layer dynamics of polymers with nanometer resolution in the axial direction

et al. 2015

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We studied the dynamics in ultrathin subsurface layers of an amorphous polymer by the spectra of single fluorescent molecules embedded into the layer by vapor deposition and subsequent controlled diffusion to the desired depth in ≈0.5 nm steps. The spectral trails of single molecules were recorded at 4.5 K as a function of diffusion depth. In depths shallower than 20 nm, the spectral dynamics deviate from those deep in the bulk. Less than 5 nm deep, the linewidths increase rapidly, whereas the number of detected molecules decreases. No zero-phonon lines were observed closer than 0.5 nm to the polymer surface. Possible physical reasons of the observed phenomena are discussed.

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“…In this high temperature range, experimental results for the homogeneous linewidth in glassy hosts show a quasi-universal quadratic temperature dependence [28] although an Arrhenius-type dependence has also been reported [18]. In order to interpret these results, several processes or models have been discussed: TLS [1], the exchange model [18], acoustic phonons [29], non-Debye phonons [29][30][31][32][33][34] and fractons [35]. The role of TLS in line broadening has been extensively considered (see for example Ref.…”

Section: Optical Dephasingmentioning

confidence: 98%

Persistent spectral hole-burning in a -doped aluminosilicate glass from 8 to 295 K: Study of the burning and refilling kinetics, and of optical dephasing

Beck

Karasik

Arvanitidis

et al. 2000

The European Physical Journal D

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High-temperature persistent spectral hole-burning (PSHB), up to room temperature, has been observed in a Eu 3+ -doped aluminosilicate glass using a high peak-power nanosecond dye laser. Spontaneous refilling as well as thermal cycling measurements show that at least two mechanisms, a fast and a slow one, are involved in our sample. We suggest that the fast or "easy" component may correspond to a non-photochemical local rearrangement of the host or to photoreduction of the Eu 3+ ions and that the second one leading to very stable photoproducts may correspond to transfer of an electron over a sizable distance through a several-step process. The mechanisms we suggest agree with light-induced hole refilling measurements. Line broadening mechanisms are discussed and the temperature-dependent part of the homogeneous width and of the spectral shift is interpreted in terms of a two-phonon (Raman) process involving pseudo-local phonons.

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Optical dephasing over a wide temperature range in Eu3+ -doped silicate glass

Cited by 7 publications

References 14 publications

Zero-phonon lines of systems with different dimensions and unconventional vibronic interactions

Zero-phonon lines of systems with different dimensions and unconventional vibronic interactions

Fluorescence microscopy and spectroscopy of subsurface layer dynamics of polymers with nanometer resolution in the axial direction

Persistent spectral hole-burning in a -doped aluminosilicate glass from 8 to 295 K: Study of the burning and refilling kinetics, and of optical dephasing

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