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VANADATE YTTRIUM
Matrix properties
Syngonycubic
Spatial groupFd3m
Dimensions of crystals,mmlengthdiameter7030
Elementary cell parameters, nm0.8086
Modulus of elasticity2.3´105
Density, g/cm33.58
Moh`s hardness8-9
Melting point, °C2105
Refraction index1.718-1.75
CoO concentration, mass.%0.05-0.3
Typical Properties of YVO4 crystal
Crystal StructureTetragonal: a = b = 7.12Å c= 6.29Å
Density4.22 g/cm3
Atomic density≈1.3 x 1020 atoms/cm2
Moh’s hardness≈5
Thermal Expansionαa=4.43 x 10-6/К; αc=11.37 x 10-6/K
Thermal ConductivityC: 5.23 W/m/k; ⊥C axis = 5.10 W/m/k
Nd3+ concentration0.1-4.0 at. %
Lasing Wavelengths914 nm, 1064 nm, 1342 nm
Axial characteristicsUniaxial; n0=nа=nb; nе=nс
Refractive Indicesη0=1.9573 ηе=2.1652 at @ 1064 nm
η0=1.9721 ηe=2.1858 at @ 808 nm
η0=2.0210 ηe=2.2560 at @ 532 nm
Sellmeier Equation (λ, in μm)
η20=3.77834+0.069736/(λ2-0.04724)-0.0108133 x λ2
η2e=4.59905+0.110534/(λ2-0.004813)-0.0122676 x λ2
Thermal Optic Coefficientdηa/dt:8.5 x 10-6/°C dηc/dt:3.0 x 10-6/°C
Stimulated emission cross-section25.0 x 10-19cm2, @=1064 nm
Luminescent lifetime90 μS (50 μS for 2 atm % Nd)
Absorption coefficient for 1.1 at. % Nd3+31.4 cm-1; @=808 nm
Intrinsic Loss0.001 cm-1; @=1064 nm
Gain Bandwidth0.96 nm (257GHz); @=1064 nm
Polarized Laser Emissionπ polarization ; parallel to optical axis (axis c)
Diode Pumped Optical to Optical Efficiency>60 %

The yttrium vanadate (YVO4) falls under the category of birefringent crystals and meet all necessary demands to be very prospective material for fibre optical communication systems.

It's ideal for optical polarizing components such as fibre optical isolators, beam displacers and circulators.

Nd3+:YVO4 is one of the most effective and advanced for diode pumped lasers. Compared to Nd3+:YAG and Nd3+:YLF, Nd3+:YVO4 diode pumped lasers have the following advantages:

 

  • Wide absorption bandwidth
  • Low lazing threshold
  • High slope efficiency
  • Large luminescent cross-section
  • Linearly polarized emission and single-mode output


Compactly designed Nd3+:YVO4 lasers with green, red and blue light output are really perfect means for material processing, spectroscopy, medical diagnostics, laser printing and other applications.

We also grow YVO4:Er3+, YVO4:Er3+,Yb3+ crystals, emitting at @1.54 ƒÊ„Km.

YVO4 LASER RODS

  • Configuration of rod's cross section Round Square
  • Diameter,mm 1.5-25.0
  • Length,mm 0.5-30.0
  • Diameter tolerance,mm +/-0.1
  • Length tolerance,mm +/-0.5
  • Non-parallelism of end faces 10"
  • Surface finish,Scratch-dig 10-5
  • Flatness λ/10


*Sizes and dimensions of elements can be varied according to customer's demand.


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