Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material,waveplate’s working wavelength is very limited because of the dispersion of the material. But Achromatic Waveplate uses two different kinds of materials,with the different dispersion, such waveplate is not sensitive to the wavelength change.

Specifications：
Material: Quartz and MgF2
Dimension Tolerance: +0.0, -0.1mm
Surface Quality: 40 / 20
Parallelism: <1 arc Sec
Wavefront Distortion: < λ/8@633nm
Retardation Tolerance: < λ/100
Clear Aperture: >90%
Damage Threshold: >10MW/cm2;
AR Coating: Ravg<1.5%@wavelength
Structure: Optical contact or Air contacted

Standard wavelength:
460-650nm, 550-750nm, 650-1000nm, 900-2100nm.

Dual Wavelength Waveplate
Dual wavelength waveplate is a special type of multiple waveplate that provides a specific retardance at two different wavelengths, it’s particularly useful when used in conjunction with other polarization sensitive components to separate coaxial laser beams of different wavelength. It is widely used to improve conversion efficiency in solid double frequency laser device.

Specifications：
Material: Quartz
Wavelength Range: 350～2100 nm,
Dimension Tolerance: +0.0, -0.1mm
Surface Quality: 20 / 10
Parallelism: <1 arc Sec
Wavefront Distortion: < λ/8@633nm
Retardation Tolerance: < λ/100
Clear Aperture: >90%
Damage Threshold: >1GW/cm2
AR Coating: R<0.2%@wavelength
Mount: Black Anodized Aluminium
Standard wavelength:
λ@1064nm+λ/2@532nm, λ/2@1064nm+λ@532nm;
λ@532nm+λ/2@355nm, λ/2@532nm+λ@355nm

Polarization Rotator
Due to the rotation activity of natural quartz crystal, it also can be used as polarization rotators so that the plane of input linearly polarized beam will be rotated at special angle which is determined by the thickness of quartz crystal.

Made of quartz, 200-2500nm
Up to 50.8mm diameter
Custom rotation angle available
RoHS Compliant

Specifications：
Material: Crystal Quartz 200-2500nm
Dimension Tolerance: +/-0.2mm
Surface Quality: 20 / 10
Parallelism: <10 arc Sec
Wavefront Distortion: < λ/[email protected]
Rotation accuracy: < 5 arc Min
Rotation: clockwise or counter-clockwise
Damage Threshold: >1GW/cm2
AR Coating: R<0.25%@wavelength