CW laser properties of Nd:GdYAG, Nd:LuYAG, and Nd:GdLuAG mixed crystals

Development and prospects of garnet ceramic scintillators: A review

“…Lu 3+ could be replaced by many rare-earth ions to achieve a variety of luminescence characteristics [137][138][139]. In the Lu-based garnets, Y 3+ and Gd 3+ of a high concentration can be incorporated [140,141], and the Al 3+ lattice site could be replaced by ions like Ga 3+ and Sc 3+ [77,[142][143][144].…”

Diode-pumped CW and passively Q-switched lasers of Nd:GdLuAG mixed garnet at 1123nm

“…By employing Nd:LuYAG garnet as laser gain medium, Di et al demonstrated stable mode-locked laser with a pulse width of 6.6 ps [4]. And in 2011, they reported the continuous-wave (CW) lasers' properties of Nd:GdYAG, Nd:LuYAG and Nd:GdLuAG mixed garnets emitting at 1064 nm [5]. In 2013, Zhuang et al reported the efficient quasi-three-level laser operation of Nd:GdLuAG garnet and blue light generation [2].…”

“…In recent years, Nd 3 þ -doped mixed garnets, including Nd:GdYAG, Nd:LuYAG and Nd:GdLuAG, have attracted many researchers' attention [1][2][3][4][5]. For inheriting a large number of excellent properties such as high thermal conductivity, excellent physical and chemical properties from single garnets, the mixed garnets were also used widely in solid state lasers [6][7][8][9][10][11].…”

Efficient Er:LuYAG laser operating at 1648 and 1620 nm

“…Laser operation of Er 3+ :LuAG at 2.7 µm ( 4 I 11/2 → 4 I 13/2 transition ) [10] and 1.645 µm ( 4 I 13/2 → 4 I 15/2 transition) [11] have already been demonstrated with, in the latter case, 5 W Er, Yb fiber laser at 1532 nm f = 200 mm Er:LuYAG crystal Output HT@1532 nm HR@1600 -1700 nm = 10 or 15%@ T HR@1532 nm 1600 -1700 nm (Lu x Y 1−x ) 3 Al 5 O 12 (LuYAG), the solid solution of LuAG and YAG, combines the advantages of the two end member compounds and has broadened absorption and emission spectra with Re 3+ -doping owing to the structural disorder. Spectral broadening in mixed crystals favors diode pumping and is highly desirable as well for widely tunable operation and short pulse generation [19][20][21][22][23][24][25]. Efficient lasing of Nd 3+ -and Tm 3+ -doped LuYAG at 1 and 2 µm have already been demonstrated with either similar or even superior laser performances to that of Nd 3+ -and Tm 3+ -doped YAG [20,22], but to our knowledge, no laser report has so far been found based on Er 3+ -doped LuYAG mixed crystal at ∼ 1.6 µm.…”