Achromatic Waveplatesd

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SK Special designed achromatic waveplates by using two pieces of plates.It is similar to Zero-order waveplate except that the two plates are made from different material,such as crystal quartz and magnesium fluoride.Since the dispersion of the birefringence can be different for the two materials,it is possible to specify the retardation values at a wavelength range,From the curve,you can see that the bandwidth of such achromatic waveplate is very wide ,while the achromatic waveplates remain a nearly constant retardance over a range of wavelength.

Specification
Material	Quartz and MgF2
Wavefront Distortion	λ/8@633nm
Dimension Tolerance	+0.0,-0.1
Retardation Tolerance	λ/100
Parallelism	<1 arc second
Surface Quality	40/20scratch /dig
Clear Apterure	Central 90%
AR Coating	Ravg>1.5% at Central Wavelength
Standard Wavrlength	VIS 465-650nm,NIR650-1100nm,IR1000-1750m,

WPBSXXXH 465-650nm

WPBSXXX465-650nm

Quartz Waveplate P/N#	Half Waveplate P/N#	Diameter(mm)
WPBS210Q	WPBS210H	10
WPBS212Q	WPBS212H	12.7
WPBS215Q	WPBS215H	15
WPBS220Q	WPBS220H	20
WPBS225Q	WPBS225H	25.4
WPBS230Q	WPBS230H	30

Achromatic Waveplate Air-Spaced(Mounted)

Quartz Waveplate P/N#	Half Waveplate P/N#	Waveplate Aperture(mm)	Mount Diameter(mm)
WPBS510Q	WPBS510H	10	12.7
WPBS512Q	WPBS512H	12.7	25.4
WPBS515Q	WPBS515H	15	25.4
WPBS520Q	WPBS520H	20	25.4
WPBS525Q	WPBS525H	25.4	30
WPBS530Q	WPBS530H	30	38.1