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Neodymium doped Gadolinium Vanadate (Nd:GdVO4) is a promising material for diode pumped laser. Similar to Nd:YVO4 crystal, Nd:GdVO4 crystal also exhibits high gain, low threshold, and high absorption coefficients at pumping wavelengths, which result from the excellent fit of the neodymium dopant in the crystal lattice. Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity.
 Physical and Optical Properties: |
Properties |
Values |
| Crystal Structure |
Zircon Tetragonal, space group D4h, a=b=7.21, c=6.35 |
| Melting Point |
1780°C |
| Density |
5.47g/ cm3 |
| Mohs Hardness |
Glass-like, ~ 5 |
| Thermal Expansion Coefficient |
aa=1.5x10-6/K, ac=7.3x10-6/K |
| Thermal Conductivity Coefficient |
11.7 W/m/K <110> |
| Peak Absorption Wavelength |
808.5 nm |
| Lasing Wavelength |
912.6 nm, 1063.1 nm, 1341.3 nm |
| Crystal Class |
Positive uniaxial, no=na=nb ne=ncno=1.9854, ne=2.1981,@ 1064nmno=2.0382, ne=2.2929, @ 532nmno=1.9977, ne=2.2198, @ 808nm |
| Thermal Optical Coefficient |
dn/dT=4.7x10-6/K |
| Stimulated Emission Cross-Section |
7.60x10-19cm2 , @1064 nm |
| Fluorescent LifetimeNd=1.2 atm% |
95 ms @ 808 nm |
| Loss Coefficient |
0.003 cm-1@ 1064 nm |
| Absorption CoefficienceNd=1.2 atm% |
74 cm-1 @ 808 nm |
| Absorption LengthNd=1.2 atm% |
0.18 mm @ 808 nm |
| Intrinsic LossNd=1.2 atm% |
Less 0.1% cm-1 , @1064 nm |
| Line width |
0.6 nm |
| Polarized Laser Emission |
p parallel to optic axis (c-axis) |
| Diode Pumped Optical to Optical Efficiency |
> 60% |
| Sellmeier Equation (for pure GdVO4 crystals) |
ne2=4.734369 + 0.1216149/(l2 - 0.0523664) - 0.013927l2 no2=3.8987165+0.05990622/(l2 - 0.0514395) - 0.011319l2 |
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| Our Manufacture Technical Capabilities: |
| Properties |
Values |
Nd dopant concentration |
0.2---3.0 atm% |
Dopant tolerance |
within 10% of concentration. |
Diameter |
0.02 ~ 20mm |
Length |
0.02 ~ 20mm |
Orientation: |
a-cut crystalline direction(+/-0.20) |
Dimensional tolerance: |
+/-0.1mm(typical)High precision +/-0.005mm can be available upon request. |
Wavefront Distortion: |
<l/8@633nm |
Surface quality: |
better than 20/10 Scratch/Dig per MIL-O-1380A |
Parallelism: |
< 10 arc seconds |
Perpendicularity: |
< 5 arc minutes |
Surface flatness: |
<lambda/10 at 632.8nm |
Clear aperture: |
Central 95% |
Chamfer: |
0.15x450 |
Damage threshold: |
over 15J/cm2 (rods without coating) over 700 MW/cm2 (coating) |
Coating: |
AR@1063nm, R< 0.1% & HT@808nm, T>95%
HR@1063nm, R>99.8% & HT@808nm, T>95%
HR@1063nm, R>99.8%, HR@532 nm, R>99% & HT@808 nm, T>95%
AR@1063 nm, R<0.1% |
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Standard Laser Grade Nd:GdVO4 Box:
Material |
Doping |
Dimension |
Coating |
Product Number |
Nd:GdVO4 |
1% |
3x3x1mm |
HR/AR Coating |
UQT-LCNG0201 |
Nd:GdVO4 |
1% |
3x3x1mm |
AR/AR Coating |
UQT-LCNG0202 |
Nd:GdVO4 |
1% |
3x3x3mm |
AR/AR Coating |
UQT-LCNG0203 |
Nd:GdVO4 |
1% |
3x3x5mm |
AR/AR Coating |
UQT-LCNG0204 |
Nd:GdVO4 |
0.5% |
3x3x5mm |
AR/AR Coating |
UQT-LCNG0205 |
Nd:GdVO4 |
0.5% |
3x3x7mm |
AR/AR Coating |
UQT-LCNG0206 |
Nd:GdVO4 |
0.5% |
3x3x10mm |
AR/AR Coating |
UQT-LCNG0207 |
Nd:GdVO4 |
0.3% |
4x4x8mm |
AR/AR Coating |
UQT-LCNG0208 |
Nd:GdVO4 |
0.3% |
4x4x10mm |
AR/AR Coating |
UQT-LCNG0209 |
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| Coating Option:HR/AR Coating:S1: HR@1064nm&532nm HT@808nm S2: AR@1064nm&532nm |
| ____________-AR/AR Coating:S1: AR@1064nm&532nm HT@808nm S2: AR@1064nm&532nm |
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| NOTES! |
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Be sure to wear laser safety goggles when checking optical path and adjusting optical axis. |
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