Polarizer NLO Crystals Waveplate High Power Polarization Beamsplitter EO Q-Switch


  Nd:YVO4 crystal 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. 
Main Features
  • Low lasing threshold and high slope efficiency
  • Low dependency on pump wavelength
  • Large stimulated emission cross-section at lasing wavelength
  • High absorption over a wide pumping wavelength bandwidth
  • Optically uniaxial and large birefringence emits polarized laser
Typical Applications
  • For Single-longitudinal-mode output and compact design
  • Diode laser-pumped Nd:YVO4 compact laser and its frequency-doubled green, red or blue laser will be the ideal laser tools of machining, material processing, spectroscopy, wafer inspection, light show, medical diagnostics, laser printing and other most widespread applications
Nd Dopant Level 0.1 - 5.0 atm%
Standard Dimensions 3x3x3 mm3, 3x3x1 mm3, 3x3x0.5 mm3
Wavefront Distortion λ/8@ 633nm
Scattering Invisible, probed with a He-Ne laser
Orientation Tolerance ±0.5deg
Dimensional Tolerance ±0.1mm
End-faces Configuration Plano/Plano
Surface Flatness λ/10 at 633 nm
Surface Quality 10/5 Scratch and Dig
Parallelism < 10 arc seconds
Clear Aperture > Central 90%
Intrinsic Loss < 0.1%cm-1
Physical Properties
Atomic Density ~1.37x1020 atoms/cm3
Crystal Structure  Zircon Tetragonal, space group D4h
a=b=7.12, c=6.29
Density 4.22 g/cm3
Mohs Hardness Glass-like, ~5
Thermal Expansion Coefficient a=4.43x10-6/K, c=11.37x10-6/K
Optical Properties (typically for 1.1 atm% Nd:YVO4, a-cut crystals)
Lasing Wavelengths 914nm, 1064 nm, 1342 nm
Thermal Optical Coefficient dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K
Stimulated Emission Cross-Section 25.0x10-19cm2 @1064 nm
Fluorescent Lifetime 90us @808 nm, (50us @808 nm for 2atm% Nd doped)
Absorption Coefficient 31.4 cm-1@808 nm
Absorption Length 0.32 mm @808 nm
Intrinsic Loss Less than 0.1% cm-1@1064 nm
Gain Bandwidth 0.96 nm (257 GHz) @1064 nm
Polarized Laser Emission p polarization, Parallel to optic axis (c-axis)
Diode Pumped Optical to Optical Efficiency > 60%
Crystal Class Positive uniaxial, no=na=nb, ne=nc,
no=1.9573, ne=2.1652, @1064nm
no=1.9721, ne=2.1858, @808nm
no=2.0210, ne=2.2560, @532nm
Sellmeier Equation
(for pure YVO4 crystals, λ
in um) 
no2=3.77834+0.069736/(λ2-0.04724) - 0.0108133λ2 ne2=4.59905+0.110534/(λ2-0.04813) - 0.0122676λ2