Substrate:
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Crystal Quartz and MgF2
Retardance:
λ/2
Surface Quality:
40-20
Thickness (mm):
6.00 ±0.2
Type:
Achromatic Waveplate
Dimensional Tolerance (mm):
+0/-0.25
Construction:
Crystalline
Transmitted Wavefront, P-V:
<λ/4 @ 632nm
Parallelism (arcsec):
<10
Housing Tolerance (mm):
+0/-0.25
Retardance Tolerance:
λ/100 @ 20°C
Coating Specification:
Ravg <0.75% @ 900 - 2100nm
Wavelength Range (nm):
900 - 2100
Damage Threshold, By Design:
Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
Achromatic Waveplates (Retarders) provide a constant phase shift independent of the wavelength of light that is used. This wavelength independence is achieved by using two different birefringent crystalline materials. The relative shifts in retardation over the wavelength range are balanced between the two materials used. Achromatic Waveplates (Retarders), with their flat response, are ideal for use with tunable lasers, multiple laser line systems, and other broad-spectrum sources.
Designed to be used at an angle of incidence of 0°, changes of ±3° will yield less than 1% change in retardance. The 23mm clear aperture waveplates will feature a cemented construction. All Achromatic Waveplates (Retarders) are mounted in an anodized aluminum housing with the fast axis clearly indicated.
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