The optical properties of Er3+ doped NaY(MoO4)2 crystal for laser applications around 1.5μm

Polarized spectral analysis of Er3+ ions in Er3+:LiGd(MoO4)2 crystal

“…The emission band near 1550 nm has a full width at half-maximum (FWHM) of about 113 nm. The value is close to that of Er 3+ :NaGd(WO 4 ) 2 [13], Er 3+ :NaY(MoO 4 ) 2 [14], and Er 3+ :LiLa(MoO 4 ) 2 crystal [19], and larger than that of Er 3+ :YAG [32], Er 3+ doped ZBLAN glass [33] and Er 3+ :Y 2 O 3 [34]. Such an FWHM can probably be resulted from the disorder structure of LiGd(MoO 4 ) 2 crystal.…”

“…The lifetime f of 4 I 13/2 determined by the single exponential fitting is around 7.20 ms, which is longer than the radiative time (see Table 5). This phenomenon has also existed in some other Er 3+ -doped hosts, such as Er 3+ :NaGd(WO 4 ) 2 [13], Er 3+ :NaY(MoO 4 ) 2 [14], and Er 3+ :LiLa(MoO 4 ) 2 [19]. There exist energy transfer between Er 3+ , the excited state absorption and serious self-absorption in Er 3+ :LiGd(MoO 4 ) 2 crystal; therefore, the rate of the depopulation from 4 I 13/2 decreases, accordingly, resulting in the increase of the measured lifetime of 4 I 13/2 [35,36].…”

“…The double molybdate crystals with the formula MRe(MoO 4 ) 2 (M = alkali metal, Re = rare earth) as host materials for solid-state lasers have widely been investigated and possess the durability in the air atmosphere, large nonlinear optical susceptibility 3 (leading to be efficient Raman shifter), and large lanthanide ion acceptance [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. The LiGd(MoO 4 ) 2 (LGM) crystal, one member of the MRe(MoO 4 ) 2 , belongs to the tetragonal system with the scheelite crystal structure [21].…”

Growth and optical characteristics of Er3+:LiLa(MoO4)2 crystal

“…can be pulled by the Czochralski method, whereas these crystals tend to crack and form color center during the growth process, thus, it is difficulty to obtain large and high-quality single crystals [7][8][9][10][11][12][13]. Bi-based double molybdate and tungstate compounds have lower melting point and no phase transition and can be grown by Czochraski method, whereas they easily erode Pt-crucible during crystal growth [14,15].…”

Growth and anisotropic spectral properties of Er:YAlO3 crystal

“…The peak emission cross-sections calculated by the reciprocity method are about 0.82 × 10 −20 , 0.94 × 10 −20 , and 1.19 × 10 −20 cm 2 for E//a, E//b, and E//c, respectively. The peak emission cross-sections of Er 3+ in YAP crystal are comparable to those of Er 3+ in YAG (1.2 × 10 −20 cm 2 ) [29], and larger than those in several other crystals, such as 0.4 × 10 −20 cm 2 for La 2 (WO 4 ) 3 [30], 0.9 × 10 −20 cm 2 for Ca 3 La 2 (BO 3 ) 4 [31], and 1.1 × 10 −20 cm 2 for NaY(MoO 4 ) 2 [32].…”