Material: BK7
glass or UV
grade fused silica.
Based on the principle that
total internal reflection
produces a phase retardation between p- and s-
components. The retardation is insensitive to wavelength.
Half
wave rhombs are made of two quarter wave rhombs
optically contacted.
Designed to give a
retardation of λ/4
or λ/2
over an
extremely broad wavelength range.
λ/4
retarder causes a beam displacement ~ 1.3 x the
aperture. λ/2 does not.
Learn more about waveplates ...
Specifications of Fresnel Rhomb Retarders
Dimensions Tolerance: +0.0, - 0.2 mm
Flatness: < λ/10 @
632.8nm
Surface Quality: 20-10 scratch and dig
Coating: AR coating available upon request
|
Quarter wave
Fresnel rhomb retarder
Half wave Fresnel rhomb retarder |