Our waveplates within wavelengths range of 200-2300nm, including octadic-wave (lambda/8), quarter-wave (lambda/4), half-wave (lambda/2) and full-wave (lambda) plates, are widely used in synthesis and analysis of light in various states of polarization.

Specification of our low-order waveplate as follow:
*Dimension Tolerance:+/-0.20mm to +0.01/-0.01mm
*ThicknessTolerance:+/-0.20mmto +/-0.005mm
*Surface Quality:80-50 to 10-5
*Flatness: at 633nm lambda -- lambda/20per 25mm
*Clear Aperture:80% -- 100%
*Parallelism(arc min):3min -- 3sec
*Crystals directional precision:5min to 30sec
*Bevel:0.3+/-0.20mm* 45degree
*No Bevel
*Coating R<0.2% 
*Other wavelengths within the range of 200-2300nm are also available upon request.