Achromatic Waveplate
Description
Achromatic waveplate is similar to zero order waveplate except that the two plates are made from different birefringent crystals. Since the dispersion of the birefringence of two materials is different, it is possible to specify the retardation values at a broad wavelength range. So, the retardation will be less sensitive to wavelength change. In other words, it can be used at a broadband wavelength range.
Achromatic Waveplate
Specifications |
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|---|---|
| Type Of Waveplate: | Achromatic Air-Spaced, Not Specified |
| Materials: | Quartz and MgF2 |
| Mounting: | Mounted, Unmounted |
| Shape: | Round, Square, Rectangle, Custom |
| Operation Wavelength Range: | 450-2100nm |
| Retardation: | Lambda/2, Lambda/4, Other |
| Retardation Accuracy: | Lambda/100, Custom |
| Wavefront Distortion: | <= Lambda/4 |
| Surface Quality (Scratch-Dig): | 40-20 |
| Diameter : | 2-100 mm |
| Wavelength: | 450-650, 550-750, 650-1100, 900-2100 nm |
Features
Material Crystal Quartz+MgF2
Dimension Tolerance +0.0/-0.2mm
Wavefront Distortion λ/4@632.8nm (for air spaced type)
Retardation Tolerance λ/100
Parallelism Surface Quality 40/20 scratch and dig
Clear Aperture >90% central area
Standard Wave quarter-wave(λ/4), half-wave(λ/2)
Standard Wavelength
450-650nm
550-750nm
650-1100nm
900-2100nm
Coating Both sides AR coated, R<1% per face
Damage Threshold Cemented: >500mJ/cm2, 20ns, 20Hz @1064nm
Air spaced: >5J/cm2, 20ns, 20Hz @1064nm
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2016
Frequently Asked Questions
An achromatic waveplate is similar to a zero order waveplate, but it is made from two different birefringent crystals, which allows for a broader wavelength range.
The damage threshold for the achromatic waveplate is >500mJ/cm2, 20ns, 20Hz @1064nm for cemented type and >5J/cm2, 20ns, 20Hz @1064nm for air spaced type.
The standard wavelength range for the achromatic waveplate is 450-650nm, 550-750nm, 650-1100nm, and 900-2100nm.
The wavefront distortion of the achromatic waveplate is λ/4@632.8nm (for air spaced type).
The achromatic waveplate is made from crystal quartz and MgF2.