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Achromatic (Broadband) Waveplates

Achromatic (Broadband) Waveplates

Material

Crystalline Quartz + MgF

Surface quality, S-D

20/10*

Transmitted wavefront distortion, P-V

<λ/8 @ 632.8 nm*

Retardation tolerance @ 20°C

±λ/100

Clear aperture

Ø5 – 76.2 mm

AR coatings

Ravg<0.75% on each surface

LIDT

>5 J/cm² @ 1064 nm, 10 ns, 10 Hz

Mounting

Black anodized metal mount

*depending on size

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Achromatic (broadband) waveplates (AWP) are pair of crystalline quartz and magnesium fluoride plates of controlled thickness with crossed fast axes to create a λ/2 or λ/4 delay in the broad wavelength range. The difference in dispersion between materials allows the arrangement of a slow phase shift over a broad wavelength range.

Achromatic waveplates are needed for various devices, such as tunable laser sources, multiple laser line systems, and other broad-spectrum sources. Achromatic (Broadband) waveplates could be used to replace a number of single-wavelength quartz waveplates, making your system more convenient and easier to use.

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