Products -> Waveplate -> Achromatic Waveplate
 
Achromatic Waveplate
 
Achromatic waveplate is similar to zero order waveplate except that the two plates are made from different birefringent crystals. Since the dispersion of the birefringence of two materials is different, it is possible to specify the retardation values at a broad wavelength range. So, the retardation will be less sensitive to wavelength change. In other words, it can be used at a broadband wavelength range.
 
  • Epoxy Cemented or Air Spaced available
  • Very Broad Bandwidth
  • Custom size available
  • RoHS Compliant
Specifications
 
Material Birefringent crystals
Dimension Tolerance +0.0/-0.2mm
Wavefront Distortion λ/4@632.8nm (for air spaced type)
Retardation Tolerance λ/100
Parallelism <10 arc second (for cemented type)
Surface Quality 40/20 scratch and dig
Clear Aperture >90% central area
Standard Wave quarter-wave(λ/4), half-wave(λ/2)
Standard Wavelength

450-650nm
550-750nm
650-1100nm
900-2100nm
Coating Uncoated for standard, AR coating available
 
 
Retardation Curve
 
 
 
λ/2 Part No.
λ/4 Part No.
Diameter(mm)
Unit Price
Type
WPA2210
WPA4210
10.0
$180
Cemented
WPA2215
WPA4215
15.0
$240
WPA2225
WPA4225
25.4
$450
WPA2410
WPA4410*
10.0
$205
Air Spaced
WPA2415
WPA4415*
15.0
$265
WPA2425
WPA4425*
25.4
$480

 
Note: Above price is for uncoated.
*: Not suitable for 450-650nm and 550-750nm.