Multiple Order Crystal Quartz Waveplates

Material	Quartz, single crystal
Usable Wavelength Range	193 nm – 2000 nm
Retardation	λ/4, λ/2, λ/8 (other values on request)
Retardation Tolerance	λ/200 - λ/500 at design wavelength
Dimensions (round and square)	2 mm - 50 mm (>50 mm on request)
Thickness	0.5 – 1.0 mm typ. (can be specified)
Parallelism	< 1 arcsec
Surface Quality	10-5 scratch-dig
Typical Absorption	negligible
Damage Threshold, pulsed @ 1064nm, 10-20 ns	10 J/cm²
Damage Threshold, cw @ VIS – NIR	10 MW/cm²
Homogeneity of Retardation over Aperture (typ. 25 mm)	λ/500
Temperature Dependence of Retardation per °C	0.3% typ. (for 1 mm thickness and center of VIS)

AR-coatings and ring-mounts available upon request