Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order waveplate is always around 0.5mm. Compared with zero order waveplate, multi order waveplate is more sensitive to wavelength and temperature changes. However, they are less expensive and widely used in many applications where the increased sensitivities are not critical.

Thickness: 0.3-0.5 mm
High Damage Threshold
Better wavefront and parallelism
Low Cost
RoHS Compliant

Specifications

Material Crystal Quartz
Dimension Tolerance +0.0/-0.2mm
Wavefront Distortion λ/8@632.8nm
Retardation Tolerance λ/100
Parallelism <1 arc second
Surface Quality 20/10 scratch and dig
Clear Aperture >90% central area
Standard Wave quarter-wave(λ/4), half-wave(λ/2)
AR Coating R<0.25%@central wavelength
Damage Threshold >10J/cm2, 20ns, 20Hz