钒酸钇(YVO4)是一种正性单轴晶体，主要用于偏振光学元件。它具有较大的双折射和较宽的透光范围，该范围一直延伸到红外区域，因此它是红外偏振器的理想选择。
 
 
 
 
  
 
   
 
Yttrium Orthovanadate Specifications
 
 
  
 
  
 
   
 
Index of Refraction at Nd:YAG (1.064 µm)a
 
 
   
 
no = 1.959
 ne = 2.166
 
 
  
 
  
 
   
 
Abbe Number (Vd), Extraordinary
 
 
   
 
18.10
 
 
  
 
  
 
   
 
Abbe Number (Vd), Ordinary
 
 
   
 
20.29
 
 
  
 
  
 
   
 
Transmission Range
 
 
   
 
488 nm - 3.4 µm
 
 
  
 
  
 
   
 
Density
 
 
   
 
4.23 g/cm3
 
 
  
 
  
 
   
 
Knoop Hardness
 
 
   
 
480 kg/mm2
 
 
  
 
  
 
   
 
Young's Modulus
 
 
   
 
133 GPa
 
 
  
 
  
 
   
 
Coefficient of Thermal Expansion
 
 
   
 
11 x 10-6 /°C (Parallel)
 4.4 x 10-6 /°C (Perpendicular)
 
 
  
 
  
 
   
 
Heat Capacity
 
 
   
 
0.51 J/(g*K)
 
 
  
 
  
 
   
 
Melting Point
 
 
   
 
1750 - 1940 °C
 
 
  
 
  
 
   
 
Change in Index of Refraction 
 with Temperature (@ 632.8 nm)
 
 
   
 
2.9 x 10-6 /°C (Parallel)
 8.5 x 10-6 /°C (Perpendicular)