Polarization of emission spectra from Ti3+-doped oxide crystals

Yamaga, M.; Henderson, B.; Rasheed, Fareed F.; Gao, Yachen; Cockayne, B.

doi:10.1007/bf00750955

Cited by 13 publications

(15 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The double-peak energies a 1 and a 2 observed in YAB and GAB are compared with similarly measured values for Ti 3+ in YAG, Al 2 O 3 and YAlO 3 in table 2 [10]. The average of the energies is approximately equal to the octahedral crystal field splitting 10Dq [10].…”

Section: Discussionmentioning

confidence: 72%

“…As we now discuss, any such differences between crystals are reflected in the polarization of the optical spectra. a The spectra reported in [10] were measured using a photomultiplier tube, the sensitivity of which decreases beyond 900 nm. In consequence, the quoted half-widths of the luminescence in YAG, YAlO 3 and Al 2 O 3 are probably underestimated.…”

Section: Discussionmentioning

confidence: 99%

“…The values of τ R ≈ 8-9 µs at 14 K are similar to the values reported for other Ti 3+doped crystals. The enhanced excited state decay rate at 300 K results from phonon-induced non-radiative processes [10].…”

Section: Polarized Optical Absorption and Photoluminescencementioning

confidence: 99%

See 2 more Smart Citations

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Wang

Gallagher

Han

et al. 1997

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Single crystals of Ti 3+ -doped aluminoborates YAl 3 (BO 3 ) 4 (YAB) and GdAl 3 (BO 3 ) 4 (GAB) have been grown by the top-seeded solution growth technique, and the optical absorption, photoluminescence and electron spin resonance (ESR) properties of Ti 3+ dopants measured at low temperature. The optical absorption spectrum of Ti 3+ comprises two broad bands with peaks at 514 and 576 nm in YAB and at 520 and 586 nm in GAB. The energy separation of the two bands in each crystal is due to the static Jahn-Teller splitting of the excited 2 E state of the Ti 3+ ions. Photoluminescence from excited Ti 3+ ions occurs as a broad band in the nearinfrared region with a peak at λ = 747 nm in YAB and 754 nm in GAB when measured at 14 K. Both absorption and photoluminescence spectra are strongly polarized. The spin Hamiltonian parameters for Ti 3+ ions substituting at trigonally symmetric Al 3+ sites in YAB have been determined from the orientation dependence of the ESR spectra. The measured shifts in the components of the g-tensor from the free electron g-value of 2.0023 are interpreted in terms of the mixing of the higher component of the 2 T 2 ground states and of the 2 E excited state into the lowest 2 T 2 ground state by spin-orbit interaction.

show abstract

Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Wang

Gallagher

Han

et al. 1997

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…The Cr 5+ ions in octahedral coordination are the 'handbook type' systems of the d 1 configuration, virtually identical to the Ti 3+ [17][18][19] and V 4+ systems [20]. In such systems the JT effect manifests in a distinct splitting of the ground and terminal GSA state ( 2 T 2g and 2 E g , respectively) that results from the electron-lattice coupling of the T and E terms to the two- dimensional vibrational mode g .…”

Section: Absorption Emission Luminescence Excitation Spectra and Lumi...mentioning

confidence: 99%

Excited state spectroscopy of the silica sol gel glass activated by Cr⁵and Cr⁶ions

Koepke

Wiśniewski

Grinberg

et al. 2002

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

We report on the optical spectroscopy of the silica sol–gel glass doped with chromium of various valences where Cr6+ and Cr5+ ions appear to be most active. The presence of the Cr5+ ions in six-fold coordination is seen in the luminescence spectra and decays whereas the Cr6+ ions in four-fold coordination are mostly responsible for the excited state absorption (ESA), but also give a contribution to the luminescence. We interpret the ESA in terms of transitions between crystal field split terms of the Cr5+O− centre which forms after the charge transfer (CT) transition, and between one of those terms and another, double-electron state of larger electron–lattice coupling, which forms after two consecutive transitions of electrons via the CT transition. The luminescence and decay characteristics are due to the composition of the transitions in both Cr5+ and Cr5+O− centres, the former interpreted in terms of the Jahn–Teller effect in the d1 system in the octahedral coordination, along with the nuances associated with that effect; the latter ones being the triplet–singlet or singlet–singlet transitions depending on temperature.

show abstract

“…[1][2][3][4][5] Particularly, Ti 3+ -doped YAP has attracted extensive attention due to its potential as a solid-state laser material operating at shorter wavelengths than Al 2 O 3 : Ti 3+ . [6][7][8] To investigate the energy levels and electronic properties, which are closely related to the laser behaviors of doped YAP, systematic and interesting electron paramagnetic resonance (EPR) studies have been carried out on this material with some transition-metal dopants (e.g., Ti 3+ , V 4+ , Cr 3+ ). [9][10][11][12][13] For example, the orthorhombic Ti 3+ center with the optical absorption band centered at 434 nm (band A) and 492 nm (band B) were observed, and the anisotropic g factors g x , g y and g z were also measured.…”

Section: Introductionmentioning

confidence: 99%

STUDIES OF THE LOCAL STRUCTURE AND THE g FACTORS FOR THE ORTHORHOMBICTi³⁺CENTER IN YAP

Lin

et al. 2007

Mod. Phys. Lett. B

View full text Add to dashboard Cite

The local structure and the g factors for the orthorhombic Ti 3+ center in YAP are theoretically studied from the perturbation formulas of the g factors gx, gy and gz for a 3d 1 ion in orthorhombic symmetry based on the cluster approach. The observed large anisotropy of the g factors may be attributed to the significant low-symmetrical (tetragonal and orthorhombic) distortion near the Al 3+ site occupied by the impurity Ti 3+ . The calculated g factors in this work show reasonable agreement with the experimental data.

show abstract

Polarization of emission spectra from Ti3+-doped oxide crystals

Cited by 13 publications

References 12 publications

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Excited state spectroscopy of the silica sol gel glass activated by Cr⁵and Cr⁶ions

STUDIES OF THE LOCAL STRUCTURE AND THE g FACTORS FOR THE ORTHORHOMBICTi³⁺CENTER IN YAP

Contact Info

Product

Resources

About

Polarization of emission spectra from Ti3+-doped oxide crystals

Cited by 13 publications

References 12 publications

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Optical and electron spin resonance spectroscopy of -doped yttrium and gadolinium aluminoborates

Excited state spectroscopy of the silica sol gel glass activated by Cr5 and Cr6 ions

STUDIES OF THE LOCAL STRUCTURE AND THE g FACTORS FOR THE ORTHORHOMBICTi3+CENTER IN YAP

Contact Info

Product

Resources

About

Excited state spectroscopy of the silica sol gel glass activated by Cr⁵and Cr⁶ions

STUDIES OF THE LOCAL STRUCTURE AND THE g FACTORS FOR THE ORTHORHOMBICTi³⁺CENTER IN YAP