Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal de Physique IV (Proceedings)

RELAXATION OF HIGH LYING EXCITED STATES OF Nd3+ IONS IN YAG : Nd3+ AND IN YAP : Nd3+

M.‐F. Joubert, J. C. Couderc, B. Jacquier

Published Dec 1, 1991• 1 citation
Publisher

Abstract

After selective excitation in either the 2P3/2 or the 4D3/2 multiplet of Nd3+ in YAG or in YAP, the fluorescence properties of these levels are analysed. The YAG:Nd3+ sample exhibits a very strong visible fluorescence attributed to transitions from the 2F(2)5/2 multiplet as a consequence of a very efficient excited state absorption mechanism from the 2P3/2 métastable state.

DOI
10.1051/jp4:19917100

Related papers

Cooperative States of Nd3+ Ion Pairs and Clusters in Nd3+:LaF3 Crystal

Yu.V. Orlovskii, Elena Vinogradova, Vladimir Hiznyakov

Up to now, only quantum computing using few quantum bits have been realized [1]. Main obstacles to increase the size of quantum register are fast decoherence and difficulties to control many-qubits entanglement. The clusters of the Nd3+ions formed in the Nd3+:LaF3crystal can be a candidate for many-qubit CNOT-gate, because of their entangled states due to strong coherent interaction (Davydov's splitting; bright and dark states with their own lifetimes τ and ra), weak electron-phonon coupling and long coherence time of the excited states. It was shown earlier that satellite lines of the main spectral line for single-site optical center of absorption [2, 3] and fluorescence excitation spectra [2] of Nd3+:LaF3crystals can be attributed to Nd3+ion pairs. The direct measurement of the fluorescence decay times for various classes of Nd3+pairs was made [2] since the pairs are well selected by fluorescence excitation wavelength.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2019•0 citations

Intensities of inter-Stark transitions in YAG-Yb3+ crystals

Gagik G. Demirkhanyan

The line strengths of indirect electric dipole and magnetic dipole transitions between Stark sublevels of the Yb 3+ impurity ion in a YAG crystal are calculated. The intensity’s parameters are determined, and the spectroscopic characteristics of inter-Stark transitions (probabilities of spontaneous transitions and radiative lifetimes of Stark sublevels of excited multiplet, fluorescence branching ratios, transition cross sections, and absorption coefficients) are computed. Quantitative calculations of spectroscopic parameters revealed a quite reasonable agreement with experimental data.

Laser Physics•Jun 28, 2006•33 citations

OBSERVATION OF COMPLETE POPULATION TRAPPING IN AN EXCITED STATE OF Yb IONS

H. Lehmitz, J. Hattendorf-Ledwoch, R. Blatt +1 more

Ion traps are of current interest for high precision measurements of atomic splitting frequencies and they are widely discussed as new frequency standards [1, 2]. Recently they have also successfully been used to perform quantum jump experiments [3, 4]. The ion storage technique can successfully be applied to observe ions for long periods without perturbations and thus to eliminate transit time broadening and collisional effects. We were interested to make high resolution level splitting measurements with Yb ions which are proposed as a proper candidate in ion trap frequency standards [1]. When resonantly exciting the ions to the 6p2P1/2-state we measured a rapidly decreasing fluorescence signal. In order to explain this phenomenon we have investigated the excitation scheme of Yb+ in more detail (see Fig. 1).

•Jul 18, 1988•0 citations

Nd:YAG fluorescence from high excited levels (A)

D. P. Devor

Journal of the Optical Society of America A•Dec 1, 1980•1 citation

De-excitation processes of optically excited Nd3+ pairs in CsCdBr3

R.B. Barthem, R. Buisson, F. Madéore +2 more

CsCdBr3 : Nd3+ crystals have been studied by laser selective excitation and time resolved spectroscopy. Due to the charge compensation resulting from the Nd3+ / Cd2+ substitution, the proportion of Nd3+ pairs is very large and does not follow the statistical laws. This proportion has been measured, its variation with concentration has been established and the effect of codoping with a monovalent metal observed. From a comparison between the properties of single ions and pairs, energy transfers have been analysed. De-excitation channels have been determined for some excited levels from the dynamics and the relative intensities of luminescence lines. An unusual behaviour, which can lead to applications, has been observed : the 4F3/2 luminescence of pairs if favoured with respect to that of single ions. This behaviour is well explained.

Journal de physique•Jan 1, 1987•36 citations

Efficient 4f3(4F3/2)→4f25d excited-state absorption in Nd3+ doped fluoride crystals

Yannick Guyot, Stéphan Guy, M.‐F. Joubert

Journal of Alloys and Compounds•Jul 1, 2001•21 citations
After selective excitation in either the 2P3/2 or the 4D3/2 multiplet of Nd3+ in YAG or in YAP, the fluorescence properties of these levels are analysed. The YAG:Nd3+ sample exhibits a very strong visible fluorescence attributed to transitions from the 2F(2)5/2 multiplet as a consequence of a very efficient excited state absorption mechanism from the 2P3/2 métastable state.
Up to now, only quantum computing using few quantum bits have been realized [1]. Main obstacles to increase the size of quantum register are fast decoherence and difficulties to control many-qubits entanglement. The clusters of the Nd3+ions formed in the Nd3+:LaF3crystal can be a candidate for many-qubit CNOT-gate, because of their entangled states due to strong coherent interaction (Davydov's splitting; bright and dark states with their own lifetimes τ and ra), weak electron-phonon coupling and long coherence time of the excited states. It was shown earlier that satellite lines of the main spectral line for single-site optical center of absorption [2, 3] and fluorescence excitation spectra [2] of Nd3+:LaF3crystals can be attributed to Nd3+ion pairs. The direct measurement of the fluorescence decay times for various classes of Nd3+pairs was made [2] since the pairs are well selected by fluorescence excitation wavelength.
The line strengths of indirect electric dipole and magnetic dipole transitions between Stark sublevels of the Yb 3+ impurity ion in a YAG crystal are calculated. The intensity’s parameters are determined, and the spectroscopic characteristics of inter-Stark transitions (probabilities of spontaneous transitions and radiative lifetimes of Stark sublevels of excited multiplet, fluorescence branching ratios, transition cross sections, and absorption coefficients) are computed. Quantitative calculations of spectroscopic parameters revealed a quite reasonable agreement with experimental data.
Ion traps are of current interest for high precision measurements of atomic splitting frequencies and they are widely discussed as new frequency standards [1, 2]. Recently they have also successfully been used to perform quantum jump experiments [3, 4]. The ion storage technique can successfully be applied to observe ions for long periods without perturbations and thus to eliminate transit time broadening and collisional effects. We were interested to make high resolution level splitting measurements with Yb ions which are proposed as a proper candidate in ion trap frequency standards [1]. When resonantly exciting the ions to the 6p2P1/2-state we measured a rapidly decreasing fluorescence signal. In order to explain this phenomenon we have investigated the excitation scheme of Yb+ in more detail (see Fig. 1).
CsCdBr3 : Nd3+ crystals have been studied by laser selective excitation and time resolved spectroscopy. Due to the charge compensation resulting from the Nd3+ / Cd2+ substitution, the proportion of Nd3+ pairs is very large and does not follow the statistical laws. This proportion has been measured, its variation with concentration has been established and the effect of codoping with a monovalent metal observed. From a comparison between the properties of single ions and pairs, energy transfers have been analysed. De-excitation channels have been determined for some excited levels from the dynamics and the relative intensities of luminescence lines. An unusual behaviour, which can lead to applications, has been observed : the 4F3/2 luminescence of pairs if favoured with respect to that of single ions. This behaviour is well explained.