�� Specifications:
�� Material: Crystal quartz
�� Rotation Accuracy: < 5 minutes
�� Wavefront Distortion: ��/4 @ 632.8 nm
�� Wavelength Range: 350-1300nm
�� Parallelism: < 10 arc seconds
�� Surface Quality: 20-10 scratch and dig
�� AR Coating: R < 0.2% at central wavelength
�� Rotation: counter-clockwise (Left-handed, standard)
�� Standard Wavelength: 532,1064nm