Achromatic Waveplate
Unlike standard waveplates, Achromatic Waveplates, provide a constant phase shift independent of the wavelength of light that is used.This wavelength independence is achieved by using two different crystalline materials to yield quarter- or half-wave retardation over a broad spectral range.The Retardation tolerance of our AWPs is better than λ/100 over the entire wavelength range.The flat response of an AWP is ideal for use with tunable lasers,multiple laser-line systems and other broad spectrum sources.
Capability
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MATERIAL
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Crystal Quartz&MgF2 Crystal
|
|
DIMENSION TOLERANCE
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+0/ -0.2mm
|
|
WAVEFRONT DISTORTION
|
λ/4@632.8nm
|
|
RETARDATION TOLERANCE
|
<λ/100
|
|
WAVELENGTH RANGE
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240~2100nm
|
|
PARALLELISM
|
3 arc seconds
|
|
SURFACE QUALITY
|
40-20 scratch and dig
|
|
CLEAR APERTURE
|
90%
|
|
AR/AR COATING
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Rave<0.8% @450~680nm,
Rave<0.8% @700~1000nm,
Rave<0.5% @950~1300nm,
Rave<0.5% @1200~1650nm
|
|
STANDARD WAVE
|
quarter-wave (λ /4), half-wave (λ/2)
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Specifications:
|
λ/4
Waveplates P/N #
|
λ/2
Waveplates P/N #
|
Mounter Dia(mm)
|
Clear Aperture (mm)
|
Mounter Thickness(mm)
|
|
AWP410
|
AWP210
|
25.4
|
10
|
8
|
|
AWP412
|
AWP212
|
25.4
|
12.7
|
8
|
|
AWP415
|
AWP215
|
25.4
|
15
|
8
|
|
AWP420
|
AWP220
|
30
|
20
|
8
|
|
AWP425
|
AWP225
|
30
|
23.5
|
8
|
Achromatic Waveplate Curves
Note：
• Custom designs for other sizes and coatings are also available upon request.
• UPT’s standard coatings are available.
• Other waveplates with different wavelength range are also available upon request, please contact UPT for more information.
