Ture zero-oder waveplate/ Segmented waveplate


With fewer sensitivity to incident angle and highly durable waveplates, the elements are made of inorganic materials only, and thus have a very high damage threshold.
The operating wavelength can be selected between 250 and 1550 nm. High transmittance for DUV is achieved by a unique multilayered design using Hafnium oxide and silicon oxide.

True zero-order waveplate

DUV waveplate
Photonic crystal waveplates are true zero-order waveplates, thanks to their very low thickness, only a few microns (~10 µm).

It is pratically impossible to obtain such thin elements when using quartz, for which 50 µm is a pratical limit. It is thus very difficult to manufacture true zero-order waveplate with conventionnal quartz based techniques. An another drawback of quartz, is that you HAVE TO manipulate very thin waveplates, which are very fragile and must be handled with much care. It contrasts with our waveplates, because you can choose between using very-thin plates, if your application needs it, or normal plates on a thick silica substrate, while remaining true zero-order waveplates.
Because the photonic crystal waveplates are formed on a silica substrate, you can handle them as conventional optical filters (standard thickness: 0.5 or 1 mm) (⇒ Autocloning Technology). Another advantage of photonic crystal true-zero order waveplates is that they have less sensitivity to the angle of incidence and to wavelength change.

High reliability

The elements are made of Hafnium oxide and silicon oxide coated on a silica substrate.
They are heat-proof up to a temperature of at least 400 °C (Celsius) and have very good reliability.


The elements are segmented waveplates manufactured in a monolithic manner. Each segment can have a different axis but there is no dead zone at the contact between two segments, nor any "manual assembly", or "gluing" between the segments when manufactured.
The design of the segments is very flexible, so any pattern can be made available for the exact needs of the final application.
(⇒ Autocloning)
Any question or request is welcome:
(⇒ Customize)

Easy to clean

Whenever necessary, the surface can be claned by direct wiping, using soft swabs.


Center wavelength λ cSelectable between 250 nm and 1550 nm
Transmittance≥85% (250 nm-349 nm), ≥95% (350 nm-1550 nm)
Retardationλ/4 or λ/2 (±λ/40)
Angle of incidence Normal incidence to ±10 degrees
Thickness of substrate0.5 mm or 1.0mm
Defect < Ø 0.3 mm
If another specs are requested, the element can be customized to meet your needs.
Please note that technical specifications are subject to change without notice.