Nd:YVO4
Nd:YVO4 crystal is one of the most excellent laser host materials, it is suitable for diode laser-pumped solid state laser. Compactly designed Nd3+:YVO4 lasers with green, red and blue light output are really perfect means for material processing. Nd3+YVO4 diode pumped lasers have: wide absorption bandwidth, low lasing threshold, high slope efficiency, large luminescent cross-section, linearly polarized emission and single-mode output.
Advantages:
1. Lower lasing threshold and higher slope efficiency
2. Low dependency on pumping wavelength and tend to single mode output
3. Large stimulated emission cross-section at lasing wavelength
4. High absorption over a wide pumping wavelength bandwidth
5. Optically uniaxial and large birefringence emit strongly-polarized laser
| Dopant | 0.1% ~ 3% |
| Orientation | A-CUT +/-0.5° |
| Size & Tolerance | W(+/-0.1)xH(+/-0.1)xL(+0.5/-0.1)mm |
| Surface quality | 10/5 |
| Perpendicularity | ≤5′ |
| Parallelism | ≤10″ |
| Bevel | <0.2mmx45° |
| Flatness | λ/10@633nm |
| Chips | <0.1mm |
| TWD | λ/6@633nm |
| CA | ≥95% |
| Coatings | C1--- AR@1064(R
<0.2%) C2--- AR@1064(R <0.2%)&532(R<0.5%) C3--- AR@1064(R <0.2%)&808(R<0.5%) C4---AR@1064(R <0.2%)&532(R<0.5%)&808(R<3%) C5--- HR@1064(R>99.8%)&HT@808(T>95%) C6---HR@1064(R>99.8%)&532(R>99.5%)&HT@808(T>95%) |
| Damage Threshold | 700MW/cm210ns 1Hz at 1064nm |
| Space group | D4h-I4/amd |
| Lattice Parameters | a=b=7.12Å, c=6.29Å |
| Density | 4.22 g/cm3 |
| Mohs Hardness | Glass-like, 4~5 |
| Thermal Expansion Coefficient | α a=4.43x10-6/K, α c=11.37x10-6/K |
| Thermal Conductivity Coefficient | | |c: 5.23 W/m/K; 丄c: 5.10 W/m/K |
| Lasing Wavelengths | 914nm, 1064 nm, 1342 nm |
| Thermal Optical Coefficient | dno/dT=8.5x10-6/K, dne/dT=3.0x10-6/K |
| Stimulated Emission Cross-Section | 25.0x10-19 cm2 , @1064 nm |
| Fluorescent Lifetime | 90 μ s @ 808 nm |
| Absorption Coefficient | 31.4 cm-1 @ 808 nm |
| Absorption Length | 0.32 mm @ 808 nm |
| Gain Bandwidth | 0.96 nm (257 GHz) @ 1064 nm |
| Diode Pumped Optical to Optical Efficiency π polarigation; | > 60% |
The Nd:YVO4 laser crystal is typically used as a laser gain medium for diode-pumped solid-state (DPSS) lasers where the crystal generates 1064 nm near-infrared light. When working with nonlinear optical crystals such as KTP or LBO crystal, 532 nm green light can be produced through second harmonic generation (SHG).
The Nd:YVO4 laser crystal is suitable for laser marking systems, micromachining systems, spectroscopic instruments, laser measurement instruments, and scientific lasers.
Nd:YVO₄, formed by adding Nd³⁺ to yttrium orthovanadate, is commonly used as a laser gain medium. After Nd³⁺ ions absorb pump light around 808 nm, the ions are excited to higher energy levels, leading to a population inversion. Through stimulated emission, the ions generate near-infrared laser radiation at 914 nm, 1064 nm, or 1342 nm within the laser cavity. The strong ability to absorb pump light and large stimulated emission cross-section make the Nd:YVO4 laser crystal suitable for compact diode-pumped solid-state (DPSS) lasers.
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