Luminescence dynamics of YAl3(BO3)4:Sm3+ crystals

Spectroscopy and Luminescence Dynamics of Ce3+ and Sm3+ in LiYSiO4

“…Figure presents the excitation and emission spectra of Sm 3+ in LiYSiO 4 at RT, respectively. In the excitation spectrum of Sm 3+ at 564 nm emission, a number of lines can be unambiguously assigned to transitions from the 6 H 5/2 ground state to the excited multiplets within the 4f 5 electron configuration. , In the emission spectrum under 401 nm excitation, the lines are attributed to transitions from the 4 G 5/2 excited state to 6 H J ( J = 5/2, 7/2, 9/2, 11/2) ground states of Sm 3+ , respectively.…”

Spontaneous and stimulated emission in Sm3+-doped YAl3(BO3)4 single crystal

“…The error resulting from this approximation is small, however, since the contribution of these transitions to the decay of the 4 G 5/2 metastable level of Sm 3 þ in crystals is predicted to be negligible. In particular, a value of 0.054 for a sum of branching ratios related to the 4 G 5/2 6 F 5/2-11/2 transitions in YAB:Sm 3 þ has been calculated employing the Judd-Ofelt treatment [8]. The most prominent emission band peaking at 600 nm is related to the transition terminating on the 6 H 7/2 level located at ca 1170 cm À 1 above the ground state thereby offering a potential of four-level laser operation.…”

“…The most prominent emission band peaking at 600 nm is related to the transition terminating on the 6 H 7/2 level located at ca 1170 cm À 1 above the ground state thereby offering a potential of four-level laser operation. 3 shows a distribution of emission intensity within the band components for polarized spectra that are calibrated in units of emission cross section employing the Fuchtbauer-Ladenburg relation with an overall rate A r ¼436 s À 1 for radiative transitions from the 4 G 5/2 level, reported in [8]. It can be seen that the anisotropy of the emission spectrum is rather small and peak values of emission cross section for both polarizations occur at 16,699 cm À 1 (599 nm).…”

“…Second, several published papers were devoted to YAB: Sm 3 þ [4][5][6][7][8] and the information reported therein provides a reference for the issue considered in the present work. Reported relevant information encompasses in particular the peculiarities of crystal growth of rare-earth doped YAB [4,5], thermal properties of YAB:Sm 3 þ [5], the band structure of YAB:Sm 3 þ derived from synchrotron radiation experiment [6], peculiarities of YAB:Sm 3 þ luminescence at 10 K [7], the Judd-Ofelt treatment and relaxation dynamics of YAB:Sm 3 þ [8].…”

Optical spectroscopy of Eu3+ ions doped in YAl3 (BO3)4 crystal

“…The optical properties of rare earth ions (Tm 3+ , Sm 3+ , Er 3+ ) in YAB host have been studied in our previous work and the crystal field parameters were calculated [9][10][11][12].…”