Spectroscopic characterization of Sm3+ in La3Ga5.5Ta0.5O14 single crystals

Magnetic Properties of La3Ga5.5Ta0.5O14 Single Crystals Doped with Sm3+ and Er3+ Ions

“…Single crystals of LGT were grown by the Czochralski method [11,12]. X-ray powder diffraction method has revealed that the crystals crystallize in the trigonal structure, belonging to the D The EPR spectroscopic measurements were carried out using a standard X-band Bruker E500 EPR spectrometer with the field range of 0-1.4 T, the microwave field modulation of 100 kHz in temperature range of 3-300 K.…”

“…It was found that absorption and luminescence transitions exhibit strong anisotropy. Inhomogeneous broadening of the spectral bands was attributed to certain structural disorder of the host, resulting from the substitution of octahedrally coordinated Ga 3+ ions by Ta 5+ ions [11]. It was concluded that the LGT:Sm 3+ system is promising for application as an orange-red emitting phosphor and can show yellow laser emission.…”

“…In the present work we deal with magnetic properties of the two other LGT single crystals doped with Sm 3+ [11] and Er 3+ [12]. In the LGT:Sm 3+ crystal a visible luminescence is possible, taking origin from the metastable 4 G 5/2 state to 6 H 5/2 (∼ 550 nm), 6 H 7/2 (∼ 600 nm) and * corresponding author; e-mail: skaczmarek@zut.edu.pl 6 H 9/2 (∼ 646 nm) states [11]. It was found that absorption and luminescence transitions exhibit strong anisotropy.…”

“…(1.14 Å) [13] or Sm 3+ (1.23 Å) [11] ions, one can expect that both types of ions enter substitutionally into La 3+ (1.30 Å) site with low C 2 symmetry. However it is not obvious.…”

Bridgman Growth of New Nonlinear Optical Crystal (La1 − xSmx)3Ga5.5Nb0.5O14 for Quasi-Parametric Chirped Pulse Amplification

“…Furthermore, the Sm-doped LGT crystals were also studied by Kaczmarek et al in detail. The magnetic and spectroscopic properties of Sm:LGT were measured [13,14]. Later, further research was carried out on the LGN crystal by Yu et al, [15].…”