Nd:YVO₄
Our Nd:YVO₄ crystal, or neodymium-doped yttrium vanadate, is a high-performance laser crystal for diode-pumped solid-state lasers. Nd:YVO₄ is widely used in machinery, materials processing, spectroscopy, wafer inspection, displays, medical testing, laser printing and data storage. It offers good thermal conductivity, a large stimulated-emission cross section, a high laser-damage threshold and a broad absorption band with a peak near 808nm. These advantages allow small crystals to be used in compact laser devices. Its uniaxial nature produces linearly polarized light, and combining it with frequency-doubling crystals enables all-solid-state lasers at green, blue and red wavelengths. Nd:YVO₄ lasers are used throughout machinery, materials processing, spectroscopy, wafer inspection, displays, medical testing, laser printing and data storage. Diode-pumped Nd:YVO₄ solid-state lasers are rapidly replacing traditional water-cooled ion lasers and lamp-pumped lasers, particularly in compact systems and single-longitudinal-mode output. Applications include miniature diode-pumped solid-state (DPSS) lasers, lidar and remote-sensing satellites.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | Nd: YVO₄ |
| Concentration tolerance | 0.5%, 1.1%, 2.0%, 3.0% |
| Orientation | A-cut or C-cut |
| Parallelism | 20〞 |
| Perpendicularity | 5〞 |
| Surface Quality | 10/5 scratch/dig compliant with MIL-O-13830 B |
| Wavefront distortion [@633nm] | <λ/8 @633nm |
| Surface Flatness [@633 nm] | λ/10@ 633 nm |
| Clear Aperture Dimension | >90% |
| Chamfer [@450] | ≤0.2mm@450 |
| Dimensional tolerance | (W±0.1mm)x(H±0.1mm)x(L+0.2/-0.1mm) (L<2.5mm) |
| Dimensional tolerance | (W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm) (L≥2.5mm) |
| Angle Tolerance | ≤0.5° |
| Damage Threshold | >1 for 1064nm, TEM00, 10ns, 10Hz (AR- Coating ) |
| Coating [@1064nm+532nm+HT@808nm/AR@1064nm+532nm] | HR@1064nm+532nm+HT@808nm/AR@1064nm+532nm |
| Crystal Structure | Zircon tetragonal, space group D4h-I4 / amd |
| Lattice constant | a=b=7.12, c=6.29 |
| Density | 4.22g/cm³ |
| Melting point | 1825 |
| Thermal conductivity [@ 25°C] | 5.2 W·m⁻¹·K⁻¹ |
| Thermo-optic coefficient dn / dT | dnₒ/dT=8.5×10⁻⁶/K; dnₑ/dT=2.9×10⁻⁶/K |
| Thermal expansion rate [@ 25°C] | a = 4.43, c= 11.4 |
| Hardness | 4~5 Mohs |
| Laser Wavelength | 1064nm, 1342nm |
| Polarized laser emission | π polarization; parallel to the optical axis (c axis) |
| Pump Wavelength | 808nm |
| Intrinsic loss [@1064nm] | 0.02cm-1 @1064nm |
| Diode-pumped optical-to-optical efficiency | >60% |
| Emission cross section [@1064nm] | 25×10⁻¹⁹cm²@1064nm |
| Fluorescence lifetime [@808 nm] | 90 μs (approximately 50 μs for 2 atm% Nd doping) @ 808 nm |
| Gain bandwidth [@1064nm] | 0.96nm @1064nm |
| Refractive index [@1064nm] | 1.9573(no); 2.1652(ne) @1064nm |
| Refractive index [@808nm] | 1.9721(no); 2.1858(ne) @808nm |
| Refractive index [@532nm] | 2.0210(no); 2.2560(ne) @532nm |
| Absorption coefficient [@808 nm] | 31.4 cm⁻¹ @ 808 nm |
| Absorption Length [@808 nm] | 0.32 mm @ 808 nm |
| Gain bandwidth [@1064 nm] | 0.96 nm (257 GHz) @ 1064 nm |
Key Features
Datasheet
Supplier Information
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