Neodymium Doped Yttrium Vanadate (Nd:YVO4)
Introduction | Main Properties | Main Applications | Fabrication Specs. | Notes



II-A. Basic Properties
Density 3.01 g/cm3
Atomic Density ~ 1.37x1020 atoms/cm3
Crystal Structure Zircon Tetragonal, Space group Dth
Lattice Parameters a=b=7.12, c=6.29
Mohs Hardness ~ 5 (Glass-like)
Melting Point ~ 1700oC
Thermal Expansion Coefficient aa=ab=4.43x10-6/oC, ac=11.37x10-6/oC
Thermal Conductivity Coefficient ||C: 0.0523 Wcm/oC, C: 0.0510 Wcm/oC
(typically for A-cut 1 atm% Nd doped-YVO4 crystals)



II-B. Optical and Laser Properties
Lasing Wavelength 1.064 mm, 1.342 mm
Crystal Class positive uniaxial, no=na=nb, ne=nc
Refractive Indexes
no ne
1.9573 2.1652 @1.064 mm
1.9721 2.1858 @0.808 mm
2.0210 2.2560 @0.532 mm
Sellmeier Equation
(pure YVO4 crystal)
no2 = 3.77834+0.069736/(l2-0.04724)-0.0108133l2
ne2 = 4.59905+0.110534/(l2-0.04813)-0.0122676l2
Thermal Optical Coefficient dna/dT = 8.5x10-6/oC; dnc/dT = 3.0x10-6/oC
Absorption Coefficient 31.4 cm-1 @0.808 mm
Absorption Length 0.32 mm @0.808 mm
Intrinsic Loss 0.02 cm-1 @1.064 mm
Gain Bandwidth 0.96 nm (257 GHz) @ 1.064 mm
Fluorescence Lifetime
~ 90 ms for 1 atm% Nd doped) @0.808 mm
~ 50 ms for 2 atm% Nd doped)
Polarized Laser Emission p polarization, parallel to optic axis (C-axis)
Stimulated Emission Cross-Section 2.5x10-18 cm2 @1.064 mm
Diode Pumped Optical to Optical Efficiency >60%

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