Most efficient laser host crystal Nd:YVO4
Laser Host Nd:YVO4 crystal Description
Yttrium Vanadate (Nd:YVO4) is one of the most efficient laser host crystal currently existing for diode laser-pumped solid-state lasers. Its large stimulated emission cross-section at lasing wavelength, high absorption coefficient and wide absorption bandwidth at pump wavelength, high laser induced damage threshold as well as good physical, optical and mechanical properties make Nd:YVO4 an excellent crystal for high power, stable and cost-effective diode pumped solid-state lasers. Recent developments have shown that Nd:YVO4 can produce powerful and stable IR, green, bule lasers with the design of Nd:YVO4 and frequency doubling crystals.
Laser Host Nd:YVO4 crystal Main features
Large stimulated emission cross-section at lasing wavelength
High absorption coefficient
Wide absorption bandwidth at pump wavelength
High laser induced damage threshold
Good physical, optical and mechanical properties
Specifications
|
Value
|
Nd Conentration
|
0.1%~3%
|
Flank Size
|
1*1~15*15
|
Long
|
0.2~20mm
|
Optical Axis Orientation
|
a-cut
|
Dimension Tolerance
|
Commercial(±0.1mm)；High Precision(±0.005mm)
|
Surface Quality
|
20/10
|
Parallelism
|
<30"
|
Optical Axis Orientation
|
+/-0.2°
|
Chamfer
|
0.15×45°
|
Flatness
|
<λ/8 @633nm
|
Wavefront Distortion
|
<λ/8 @633nm
|
Coating
|
According to customer request
|
Physical Properties
|
|
Atomic Density
|
1.26x1020 atoms/cm³ (Nd 1.0%)
|
Crystal Structure
|
Zircon Tetragonal, space group D4h-I4/amd
a=b=7.1193, c=6.2892
|
Density
|
4.22g/cm3
|
Mols
|
4-5 (Glass-like)
|
Thermal Expansivity (300K)
|
aa=4.43x10-6/K
ac=11.37x10-6/K
|
Thermal Conductivity Coefficient (300K)
|
//C:0.0523W/cm/K
⊥C:0.0510W/cm/K
|
Optical Properties
|
|
Laser Wave
|
1064nm, 1342nm ,914nm
|
Thermo-Optical Coeffecient (300K)
|
dno/dT=8.5x 10-6/K
dne/dT=2.9x 10-6/K
|
Sellmeier Equation
(for pure YVO4 crystals)
|
no²=3.77834+0.069736/(l2-0.04724)-0.0108133.l²
ne²=4.59905+0.110534/(l2-0.04813)-0.0122676.l²
|
Excited Emission Section
|
25x 10-19cm² @1064nm
|
Fluorescence Lifetime
|
90ms
|
Absorption Coefficient
|
31.4cm-1 @810nm
|
Extrinsic Loss
|
0.02cm-1 @1064nm
|
Gain Bandwidth
|
0.96nm @1064nm
|
Polarized Light Shoot
|
polarization; parallel to optic axis(c-axis)
|
LD Pump Light Throughput Efficiency
|
>60%
|
