Achromatic Waveplate, FOCtek

Foctek's AWPs are designed to effectively eliminate the wavelength dependence over a wide spectral range,typically several hundred nanometers.Our AWPs are available for four wavelength ranges:VIS (450-680nm),NIR (700-1000nm),950-1300,1200-1650.The AWPs are air spaced construction in a black anodized aluminum housing.Fast axis is marked on the mount.Custom assemblies,including cemented versions,are available to meet your specific requirements.
 

Specifications:

Material : -------------------------------------Crystal Quartz & MgF2
Parallelism:--------------------------------<1 arc min
Diameter Tolerance:------------------+0.0, -0.2
Surface Quality :-----------------------40/20 scratch dig
Retardance:-----------------------------λ/2 andλ/4
Retardation Tolerance :-------------<λ/100 over wavelength range
Wavefornt Distortion  :---------------λ/4@633nm
AR Coated:------------------------Rave<0.8%@450-680   Rave<0.8%@700-1000 
                                                     Rave<0.5%@950-1300  Rave<0.5%@1200-1650
 

Wavelength Ranges: 450~680nm,700~1000nm,950~1300nm ,1200~1650nm

Achromatic Waveplate Curves

 

λ/4@450~680nm λ/2@450~680nm λ/4@700~1000nm λ/2@700~1000nm
λ/4@950~1300nm λ/2@950~1300nm λ/4@1200~1650nm λ/2@1200~1650nm

 

Quarter Waveplates P/N#

Half Waveplates P/N#

Mout Diameter(mm)

Aperture(mm)

Thickness(mm)

AWP210Q

AWP210H

25.4

10.0

8.0

AWP212Q

AWP212H

25.4

12.7

8.0

AWP215Q

AWP215H

25.1

15.0

8.0

AWP220Q

AWP220H

30.0

20.0

8.0

AWP225Q

AWP225H

30.0

25.4

8.0