Nd YVO4 Laser Crystal Laser Crylink

Nd: YVO4

Nd:YVO4 crystal is an excellent laser for making the diode-pumped solid lasers. The primary and most significant advantages of Nd:YVO4 are high absorption coefficient, significantly stimulated emission cross-section and wide absorption band. The absorption peak is about 808 nm. Because of these advantages, tiny crystals can be used to make smaller laser devices. Another feature of Nd:YVO4 crystal is this uniaxial, which makes it emit linearly polarized lights. It is combined with frequency doubling crystals to enable an all-solid-state laser with green, blue, and red wavelengths.


Concentration Tolerance (atm%)0.5%, 1.1%, 2.0%, 3.0%
OrientationA-cut or C-cut
Surface Quality10/5 Scratch/Dig per MIL-O-13830 B
Wavefront Distortion<λ/8 @633nm
Surface Flatnessλ/10@ 633 nm
Clear Aperture>90%
Dimension Tolerance(W±0.1mm)x(H±0.1mm)x(L+0.2/-0.1mm) (L<2.5mm)
(W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm) (L≥2.5mm)
Angle Tolerance≤0.5°
Damage Threshold[GW/cm2 ]>1 for 1064nm, TEM00, 10ns, 10Hz (AR-coated)
Crystal StructureZircon Tetragonal, space group D4h-I4/amd
Lattice Constantsa=b=7.12, c=6.29
Melting Point1825
Thermal Conductivity /(W·m-1·K-1@25°C)5.2
Thermal Optical Coefficient(dn/dT)dno/dT=8.5×10-6/K; dne/dT=2.9×10-6/K
Thermal Expansion /(10-6·K-1@25°C )a = 4.43, c= 11.4
Hardness (Mohs)4~5
Laser Wavelength1064nm, 1342nm
Polarized Laser Emissionπ polarization; parallel to optic axis (c-axis)
Pump Wavelength808nm
Intrinsic Loss0.02cm-1 @1064nm
Diode Pumped Optical to Optical Efficiency>60%
Emission Cross Section25×10-19cm2@1064nm
Fluorescence Lifetime90 μs (about 50 μs for 2 atm% Nd doped) @ 808 nm
Gain Bandwidth0.96nm @1064nm
Refractive Index1.9573(no); 2.1652(ne) @1064nm
1.9721(no); 2.1858(ne) @808nm
2.0210(no); 2.2560(ne) @532nm
Absorption Coefficient31.4 cm-1 @ 808 nm
Absorption Length0.32 mm @ 808 nm
Gain Bandwidth0.96 nm (257 GHz) @ 1064 nm

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