Overview: Super Achromatic Wave plate (Retarder) consists of three
achromatic waveplates (made of quartz, MgF2 and sapphire)
that optically cemented to maximize transmission and carefully
aligned to minimize the wavelength dependence of the retardance
based on Pancharatnama's design is used for modulator in
polarimeter. Comparing to the normal achtomatic waveplate which consists of one
quartz plate and one MgF2 plate, the super achromatic
waveplate(retarder) provides an extremely flatter retardance on a
significantly broader wavelength range. Main Features of Super Achromatic Wave Plate: - Wide spectral bandwidth
- Low temperature sensitivity
- Extremely flat retardance over a super broad spectral range
General Specifications Of Achromatic Wave Plate: | Material | Crystal Quartz + MgF2 + Sapphire | | Dimension Tolerance | +0.0/-0.2mm | | Surface Quality | 40/20 scratch and dig | | Clear Aperture | >90% central area | | Wavefront Distortion | <λ/4@632.8nm (for single plate) | | Parallelism | <10 arc seconds (for single plate) | | Retardation Tolerance | <λ/100 | | Standard Wave | quarter-wave(λ/4) half-wave(λ/2) | | Standard Wavelength | 380-1100nm
600-2000nm | | Coating | No, available | | Damage Threshold | 500mJ/cm2, 20ns, 20Hz @1064nm |
Standard Products Of Super Achromatic Half Wave Plate: | Part Number | Type | Diameter (mm) | Retardation (λ) | Wavelength (nm) | Clear Aperture (mm) | | WSA220-380-1100 | Cemented | 20 | λ/2 | 380-1100 | 18 | | WSA220-600-2000 | Cemented | 20 | λ/2 | 600-2000 | 18 |
Standard Products Of Super Achromatic Quarter Wave Plate: | Part Number | Type | Diameter (mm) | Retardation (λ) | Wavelength (nm) | Clear Aperture (mm) | | WSA420-380-1100 | Cemented | 20 | λ/4 | 380-1100 | 18 | | WSA420-600-2000 | Cemented | 20 | λ/4 | 600-2000 | 18 |
Retardance Graph of Super Achromatic Wave Plate: 380-1100nm Super Achromatic Waveplate | 600-2000nm Super Achromatic Waveplate |
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