A 7-W diode-pumped Nd:YVO 4 cw laser at 1.34 μm

Growth and laser characterization of mixed Nd:LuxGd1−xVO4 laser crystals

“…LuVO 4 and GdVO 4 possess the same ZrSiO 4 structure, belonging to the tetragonal symmetry space group I4 1 /amd, and their melting points are very close. These features enable the LuVO 4 -GdVO 4 mixed vanadate crystals to be grown as a solid solution single crystal.…”

“…As one of the most important parts of DPSSLs, the laser crystals have attracted increasing attention. In the field of the laser crystals, the neodymium-doped vanadates, such as Nd:Y-VO 4 [1][2][3][4][5], Nd:GdVO 4 [6][7][8][9][10] and Nd:LuVO 4 [11][12][13][14], have been identified as promising materials for diode-pumped lasers.…”

“…Considering the different segregation coefficients of Nd ion in LuVO 4 (0.91) and GdVO 4 (0.78), the Nd-dopant concentrations should be different in Nd:Lu x Gd 1Àx VO 4 melts (polycrystalline materials) for different x values, in order to obtain Nd:Lu x Gd 1Àx VO 4 as-grown crystals with the Nd concentration of about 0.5%. Rectangular single crystal bars of Nd:YVO 4 (a-axis), with the dimensions of 3 mm  3 mm  25 mm, were used as seeds. After reaching the final diameter dimension of about 30 mm, the pulling rate was set at 1-2 mm/h with the rotation rate of 10-30 rpm during growth.…”

Growth of excellent-quality Nd:LuVO4 single crystal and laser properties

“…It is well known that vanadates such as Nd:YVO 4 [1][2][3][4][5][6] and Nd:GdVO 4 [7][8][9][10][11][12] particular luminescence properties give rise to excellent laser efficiencies when they are pumped by LD. The substitution of lutetium ions (Lu 3+ ) for yttrium (Y 3+ ) or Gadolinium (Gd 3+ ) as constitutive ions in the host materials has already been proved to be beneficial according to recent results [13], and the absorption and emission cross sections of Nd:LuVO 4 crystal have been determined to be greater than those of other vanadate crystals [13].…”

Lasers de frequência única de Nd:YIF e Nd:YVO4 na região do vermelho

“…Porém um dos maiores problemas em se trabalhar comóxidosé a forte lente termicamente induzida. Para minimizar esse problema optou-se pela utilização de um cristal com uma baixa dopagem de neodímio (0,15mol%) possibilitando assim uma melhor distribuição da potência de bombeamento dentro do cristal, diminuindo a lente térmica [23,43]. O cristal utilizado tem dimensões de 3 × 3 × 10mm 3 , com filme nas duas faces de 3 × 3mm 2 , anti-refletor para o comprimento de onda de 1342nm e transmissor para os comprimentos de onda de bombeamento, 808nm (T > 95%), e para 1064nm (T > 50%).…”