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ND:YAG
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Neodymium Doped Yttrium Aluminum Aluminum Garnet(Nd:YAG)Crystal

Neodymium Doped Yttrium Aluminum Garnet-Nd:Y3A15O12(Nd:YAG) with high efficiency, high beam damage threshold and good heat conductivity ,has been applied to 
activate and sensitize ion so as to enhance the laser output. Therefore, it has been continuous to be the most widely used solid state laser material. At room temperature, it can work in continuous, pulsed and many other modes in which the continuous modes is its most efficient mode whose laser output has reached KW level.

Basic properties of Nd:YAG crystal
  Chemical Formula: Nd:Y3Al5O12 
Crystal Structure: Cubic 
Lattice Constant: 12.01? 
Melting Point: 1970°C 
Density: 4.5g/cm3 
Refractive Index 1.82 
Thermal Expansion Coefficient: 7.8x10-6 /K  
Thermal Conductivity（w/m/k）: 14,20°C
10.5,100°C 
Mohs Hardness: 8.5 
Stimulated Emission Cross-Section: 2.8x10-19 cm-2 
Relaxation Time of Terminal Lasing Level: 30ns 
Radiative Lifetime: 550 ms 
Spontaneous Fluorescence: 230 ms 
Linewidth: 0.6nm 
Pump Wavelength: 807.5nm 
Polarized Emission: Unpolarized 
Thermal Birefringence High 
Pump Wavelength Absorption Band: 1nm 
Loss Coefficient: 0.003cm-1@1064nm 


 

u Advantages:
l High gain, low threshold, high efficiency
l Low loss at 1.06 um, high optical quality
l Good mechanical and thermal properties
l Easy to operate in TEM00 mode
l A variety of operate modes (continuous, pulsed, Q-switched, mode-locking)
Basic properties of Nd:GdVO4 crystal
 

Crystal Structure  Tetragona 
Space Group  I41/amd 
Lattice Parameter  a=0.721nm, b=0.635nm 
Lasing Transition 4F3/2 → 4I11/2 
Lasing Wavelength  1062.9nm 
Emission Cross Section (at 1064nm)  7.6x10-19 cm2 
Absorption Cross Section (at 808nm)  4.9x10-19  cm2 
Absorption Coefficient (at 808nm)  74cm-1 
Index of Refractivity (at 1064nm)  n0=1.972,   ne=2.192 
Thermal Conductivity ()  11.7W/(mxK) 
Density  5.47g/cm3 
Nd Dopant Level (atomic)  0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%...