Fluorescence properties of Sm3+: ZnCl2BaCl2LiCl glass

Eu2+/Sm3+ ions co-doped white light luminescence SrSiO3 glass-ceramics phosphor for White LED

“…3(a), the PLE spectra of GC5 were monitored at 505 nm and 600 nm respectively. The broad excitation band ranging from 300 nm to 450 nm could be attributed to the 4f 7 → 4f 6 5d 1 transitions of Eu 2+ ions, while for Sm 3+ several narrow bands centered at 345 nm, 362 nm, 376 nm, 407 nm, 418 nm and 438 nm were assigned to transitions of 6 H 5/2 → 3 H 7/2 , 6 H 5/2 → 4 L 17/2 , 6 H 5/2 → 4 K 13/2 , 6 H 5/2 → 4 F 7/2 , 6 H 5/2 → ( 6 P 5/2 , 4 P 5/2 ), 6 H 5/2 → 4 G 9/2 [29,30]. Apparently, the glass ceramics can be efficiently excited by several light in the UV region, and in this letter 365 nm was chosen as the excite light.…”

Crystal growth and spectral properties of Sm:GdVO4

“…The peak at 604 nm is very intense. The 4 G 5/2 → 6 H 5/2 transition is mainly dominated by MD and partly by ED, the 4 G 5/2 → 6 H 7/2 transition with J = ±1 is MD allowed but ED dominated, and the 4 G 5/2 → 6 H 9/2 transition along with the 4 G 5/2 → 6 H 11/2 transition are ED dominated while MD transitions are formally forbidden [12,13].…”

Sm3+-doped (Ca,Mg,Zr)GGG crystal: A potential reddish-orange laser crystal

“…3 Calculated refractive index n, radiative transition probabilities AR, total transition probability (AT), branching ratiosˇR, electric-dipole line strengths S ed , magnetic-dipole line strengths S md and radiative lifetime R , estimated for the 4 the 4 G 5/2 → 6 H 5/2 transition is mainly dominated by magnetic dipole (MD) and partly by electric dipole (ED), the 4 G 5/2 → 6 H 7/2 transition is MD allowed but ED dominated and the 4 G 5/2 → 6 H 9/2 transition along with the 4 G 5/2 → 6 H 11/2 transition are purely ED, which agree well with Refs. [2,27]. Generally, the intensity ratio of ED to MD transitions has been used to measure the symmetry of the local environment of the trivalent 4f ions.…”

“…Nevertheless, among this group of ions, Sm 3+ -doped optical materials are studied much less than others such as Nd 3+ , Yb 3+ , and Er 3+ [1][2][3][4][5][6][7][8]. Due to the large scale demand and great advance of laser diode of about 405 nm which is used in many fields such as lighting, optical storage and also can be used to directly pump Sm 3+ -activated laser medium, the situation maybe change in the near future.…”