Achromatic Waveplate

Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material waveplates the working wavelength is very limited because of the dispersion of the material. While Achromatic Waveplate use two different kinds of material, the dispersions of the birefringence are also different. Hence such waveplate is not sensitive to the wavelength change. 

Technical Parameters:

Material
Quzrtz+MgF2
Wavelength Range
200-2000nm
Surface Quality
20/10

Dimension Tolerance
+/-0.1mm
Paralllelism
<1 arc Sec
Retardation Tolerance
< λ/100
Clear Aperture
>90%
Damage Threshold
>500 MW/cm2
 Coating
AR Coating
Mount
Anodized Aluminium



Delay Curves