AWP-A-12.7-.5
Achromatic · quartz + MgF2
Achromatic Waveplate — Air Spaced, 12.7 mm
Tower's air-spaced achromatic waveplate pairs crystal quartz with magnesium fluoride (MgF2). Both materials are birefringent; by matching their opposing dispersion, the change in retardation is minimized as wavelength changes. The result is a waveplate whose performance is nearly independent of wavelength over a range of several hundred nanometers — ideal for tunable lasers or broad spectral widths. Ranges: 465–610, 610–850, 700–1000, and 1200–1650 nm.
$755
per waveplate
Stock / short lead time
Volume pricing, custom sizes, coatings and mounts available — review your quote list or request a formal quote.
Specifications
- Substrate
- Crystal quartz + MgF2
- Retardance
- λ/4 and λ/2
- Retardation tolerance
- λ/100 over range
- Clear aperture
- 12 mm
- Temp coefficient
- < λ/500 per °C
- Wavelength ranges
- 465–610 · 610–850 · 700–1000 · 1200–1650 nm
- Wavefront distortion
- λ/4 @ 633 nm
- Surface quality
- 20-10 scratch/dig
- Parallelism
- < 1 arc min
- Damage threshold
- 2 J/cm² (8 ns @ 1064 nm) · 500 kW/cm² CW
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