Neodymium: Gadolinium Vanadate (Nd:GdVO4)
Gadolinium vanadate doped with neodymium, Nd:GdVO4, is a promising material for diode pumped lasers.
Like neodymium doped yttrium vanadate, the gadolinium vanadate exhibits a larger absorption and emission cross section compared to Nd:YAG.
In fact, Nd:GdVO4 has a 7-times higher absorption cross section at 808nm and a 3-times larger emission cross section at 1.06µm than does Nd:YAG (Ref. 1).
Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity.
仕様
General Specifications
| Laser wavelengths (Ref. 5) | 1062.9 nm |
|---|---|
| Polarization | Parallel to c-axis |
| Radiative lifetime (microseconds) at 1% Nd doping | ～ 95 µs (Ref. 5) |
| Pump wavelength (Ref. 5) | 808.4 nm |
| Peak pump absorption at 1% doping (Ref. 5) | ～ 57 cm-1 |
| Thermal conductivity, W/mK | 11.7(Ref. 7) |
| Doping concentration range | 0.1 - 3.0% |
| Other possible dopants | Tm, Ho, Er |
Material Properties
| Crystal Structure, Space Group | Tetragonal, I41/amd (Ref. 4) |
|---|---|
| Lattice constants, nm | a: 0.721 b: 0.635 (Ref. 4) |
| Melting temperature, °C | 1780 (Ref. 6) |
| Thermal expansion @25°C, x1-6/°C | a: 1.5 b: 7.3 (Ref. 4) |
| Specific heat @25°C, cal/mol K | 32.6 (Ref. 4) |
| dn / dT, x10-6/°C | 4.7 (Ref. 4) |
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