Product details
Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocites of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices.
Low-Order Waveplates are much better than the multi-order wave-plates because of its thinner thickness (less than 0.5 mm). Better temperature (38), Wavelength (1.5nm) and incident angle (4.5° ) bandwidth and high damage threshold make it widely used in common application.
Specification of our low-order waveplate as follow:
*Material: Crystal Quartz
*Dimension Tolerance: +0.0, -0.1mm
*Optical Angle Orientation Tolerance: +/-0.1degree
*Wavefront Distortion: Λ/8@632.8nm
*Retardation Tolerance: <λ/500
*Wavelength Range: 240-2100nm
*Parallelism<5 arc seconds
*Clear Aperture. >80%
*Surface Quality: 20-10 scratch and dig
*AR/AR Coating: R<0.2% at central wavelength
*Other wavelengths, sizes and coatings are available upon request
| Range of diameter |
Dia.0.7mm-Dia.400mm |
| Range of curve radius |
R1.5-R∞ etc. |
| Tolerance of diameter |
+/-0.1, +/-0.01, +/-0.005 etc. |
| Surface accuracy |
λ , 1/2λ , 1/4λ , 1/10λ etc. |
| Tolerance of Thickness |
+/-0.1, +/-0.05, +/-0.01 etc. |
| Centration |
+/-2′,+/-1′ etc. |
| Aperture N |
5, 1 etc. |
| Irregularity ΔN |
2, 1, 0.5, 0.2 etc. |
| Surface quality |
60/40, 40/20, 20/10, 10/5 etc. |
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