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Achromatic waveplate

Product Info

Achromatic waveplates are similar to zero-order except that the two plates are made from different materials, such as crystal quartz and magnesium fluoride. Since the dispersion of the birefringence can be difference for the two materials, it is possible to specify the retardation value at a wavelength range. Hence, the retardation of the resulting waveplate can be made to low sensitivity to wavelength change. 


Based on the contact methods of the two plates, achromatic waveplates are classified into two types: air-spaced and cemented. 


Key features: 

- Cemented or air spaced 

- Broadband wavelength


20180614141043657


Specifications

  

Material:

crystal quartz and MgF2

Diameter tolerance:

+0.0, -0.1mm

Wavefront distortion:

λ/4@632.8mm

Retardation tolerance:

λ/100

Wavelength range:

VIS: 465-610nm, NIR: 700-1000nm, IR: 1200-1650nm    

Parallelism:

< 10 arc second

Surface quality:

20-10 scratch & dig

Coating:

AR/AR, R < 0.2% on both surface at central wavelength



Achromatic waveplates are similar to zero-order except that the two plates are made from different materials, such as crystal quartz and magnesium fluoride. Since the dispersion of the birefringence can be difference for the two materials, it is possible to specify the retardation value at a wavelength range. Hence, the retardation of the resulting waveplate can be made to low sensitivity to wavelength change. 


Based on the contact methods of the two plates, achromatic waveplates are classified into two types: air-spaced and cemented. 


Key features: 

- Cemented or air spaced 

- Broadband wavelength


20180614141043657


Specifications

  

Material:

crystal quartz and MgF2

Diameter tolerance:

+0.0, -0.1mm

Wavefront distortion:

λ/4@632.8mm

Retardation tolerance:

λ/100

Wavelength range:

VIS: 465-610nm, NIR: 700-1000nm, IR: 1200-1650nm    

Parallelism:

< 10 arc second

Surface quality:

20-10 scratch & dig

Coating:

AR/AR, R < 0.2% on both surface at central wavelength