O. Guillot-Noël

Optical spectra and crystal field calculations of doped Zircon-type laser hosts (, P, As)

Low temperature absorption spectra of doped , and single crystals, grown by the flux method, are reported. A simulation of the energy level scheme is carried out. The effective Hamiltonian includes elementary interactions such as coulombic, spin-orbit, two- and three-body interactions. The crystal field effect is introduced through the five non-zero crystal field parameters allowed by the symmetry site occupied by the rare earth. A simulation is performed on the 96 (102, 90) experimental energy levels of , (, ) with a good rms standard deviation of 16.2 (15.4, 15.7) . It is noteworthy that the energy level scheme of is reported for the first time. The wave functions of the systems are used for the calculation of the magnetic factor g. These factors are in good agreement with the values deduced from EPR measurements on the lowest level . The crystal field parameters are also compared to the a priori parameters calculated using the simple overlap model and the correlated crystal field strength is also analysed.

Laser action in LaAlO3:Nd3+ single crystal

The spectral and laser properties of Nd3+ doped (1wt%) LaAlO3 single crystal are presented. The energy levels of the Nd3+ ion in the LaAlO3 matrix were assigned. The Judd–Ofelt parameters Ω2=1.346, Ω4=4.490, and Ω6=5.168 (all ×10−20cm−2) were evaluated. The absorption σabs and emission σemi cross sections at the respective pumping and emission wavelengths were calculated to be σabs(789.7nm)=2.42×10−20cm2, σemi(909nm)=5.02×10−20cm2, and σemi(1080nm)=7.03×10−20cm2. Continuous-wave laser action at 1080nm in LaAlO3:Nd3+ was obtained.

Experimental tailoring of a three-level Λ system in Tm 3 + : YAG

Quantum information transfer from light to atom ensembles and vice versa has both basic and practical importance. Among the relevant topics let us mention entanglement and decoherence of macroscopic systems, together with applications to quantum memory for long distance quantum cryptography. Although the first experimental demonstrations have been performed in atomic vapors and clouds, rare earth ion doped crystals are also interesting media for such processes. In this paper we address

A practical analysis of electron paramagnetic resonance spectra of rare earth ion pairs

{mathrm{Tm}}^{3+}

Optical excitation of nuclear spin coherence in a Tm 3+ :YAG crystal

ions capability to behave as three-level

Branching ratio measurement of a Λ system in Tm 3 + : YAG under a magnetic field

ensuremath{Lambda}

Radiation induced defects in Sr2B5O9Br:Ce3+ storage phosphor

systems, a key ingredient to convert optical excitation into a spontaneous-emission-free spin wave. Indeed

Crystal field and EPR studies of Nd3+:YMO4 (M = V, As, P)

{mathrm{Tm}}^{3+}

Crystal field study of ytterbium doped Lu2SiO5 and Y2SiO5 under a magnetic field

falls within reach of light sources that can be stabilized easily to the required degree. In the absence of zero-field hyperfine structure we apply an external magnetic field to lift the nuclear spin degeneracy in

Host dependence of the optical properties of Nd3+ ions in zircon-type crystals YMO4 (M = V, P, As)

{mathrm{Tm}}^{3+}:mathrm{YAG}