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Nd:GdVO4 CRYSTALS Download PDF document

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
 
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%
 
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

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

NOTES!  
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
 
 
 
   
product Index
CRYSTALS-INDEX
OPTICAL CRYSTALS
 
Undoped YVO4
 
LiNbO3 Crystals
 
Undoped YAG
 
Sapphire Crystals
LASER CRYSTALS
 
Nd:YVO4 Crystals
 
Nd:GdVO4 Crystals
 
Nd:YAG Crystals
 
Ti:Sapphire Crystals
OPTICS-INDEX
 

 

 

 

 

 

 

 

 

 

 

 

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