Nd:YVO4 is the most efficient laser crystal for diode-pumped solid-state lasers. Its good physical, optical and mechanical properties make Nd:YVO4 an excellent crystal for high power, stable and cost-effective diode-pumped solid-state lasers. Compared with Nd:YAG for diode laser pumping, Nd:YVO4 lasers has large of advantage:
Lower lasing threshold and higher slope efficiency
Large stimulated emission cross-section at lasing wavelength
High absorption over a wide pumping wavelength bandwidth
Low dependency on pumping wavelength and tend to single mode output
Optically uniaxial and large birefringence emit strongly-polarized laser
Sellmeier equations for pure YVO4 crystal as follows:
| Laser crystal | Doping(atm%) | s(x10-19cm2) | a (cm-1) | t (ms) | La(mm) | Pth(mW) | hs (%) |
| Nd:YVO4(a-cut) | 1.0 | 25 | 31.2 | 90 | 0.32 | 30 | 52 |
| 2.0 | 25 | 72.4 | 50 | 0.14 | 78 | 48.6 | |
| Nd:YVO4(c-cut) | 1.1 | 7 | 9.2 | 90 | 231 | 45.5 | |
| Nd:YAG | 0.85 | 6 | 7.1 | 230 | 1.41 | 115 | 38.6 |
Diode pumped Nd:YVO4 laser output comparing with diode pumped Nd:YAG laser.
| Crystals | Size (mm3) | Pump Power | Output (at 1064nm) |
| Nd:YVO4 | 3x3x1 | 850mW | 350mW |
| Nd:YVO4 | 3x3x5 | 15W | 6W |
| Nd:YAG | 3x3x2 | 850mW | 34mW |
Diode pumped Nd:YVO4+KTP green laser.
| Nd:YVO4 (mm3) | KTP (mm3) | Pump Power | Output (TEM00 at 532nm) |
| 3x3x1 | 3x3x5 | 890mW | 76mW |
| 3x3x1 | 3x3x5 | 50mW | 2.5mW |
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Transmitting wavefront distortion: less than l/4 @ 633 nm Dimension tolerance: W ㊣ 0.1 mm x H ㊣ 0.1 mm x L + 0.2 mm/-0.1 Clear aperture: > 90% central area Flatness: l/8 @ 633 nm, and l/4 @633nm for thickness less than 2mm Scratch/Dig code: 10/5 to MIL-O-13830A Parallelism: better than 20 arc seconds Perpendicularity: 5 arc minutes AR coating: R< 0.2% at 1064nm, HR coating: R>99.8%@ 1064nm, T>95%@ 808 nm Quality Warranty Period: one year under proper use |
| Doping | Dimension | Coating |
| 2% | 3x3x1mm | HR1064/HT808 |
| 1% | 3x3x5mm | HR1064/HT808 |
| 0.5% | 3x3x8mm | AR/AR1064&808 |
| 0.27% | 3x3x10mm | AR/AR1064&808 |
| 0.2-1% | Dia3 x 30-60mm | AR/AR1064nm |