DUV Achromatic QWP/HWP provide high accurate phase retardation over wide Deep UV range (λ=200~400nm).

DUV Achromatic Waveplate

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Achromatic QWP/HWP is waveplates which is consists of different kinds of birefrigerence crystals to give fairly constant phase retardation over the wide range of wavelength.

Our skillful polishing technique and highly precise optical measurement create DUV Achromatic QWP/HWP, which is specially designed as to provide high accurate phase retardation over wide Deep UV range (λ=200~400nm).

As DUV Achromatic QWP/HWP is consist of three kinds of birefrigerence crystals, it has much better achromatic characteristic of the retardation than traditional Quartz and MgF2 crystal waveplates over DUV region.
Phase retardation data measured highly precision by UV polarizers would be attached with delivery of DUV Achromatic QWP/HWP.

Two types of DUV Achromatic QWP/HWP are available, Optical contacted type and Air gap type. The advantage of the Optical contacted type is high transmittance and compact size.

On the other hand, Air gap type excels in high power light as LASERs.

Both type of waveplate are mounted in adhesive-free holder, but Optical contacted type is available without the holder.
We can customize wavelength range, clear aperture, and size except standard specification according to your request.


DUV Achromatic QWP/HWP ; Standard Specification
  DUV Achromatic QWP DUV Achromatic HWP
Surface Quality S/D = 10/5
Transmitted Wavefront, PV(λ) 1/4@633nm
Wavelength(nm) 200〜400
Retardation 90 180
Retardation Tolerance(λ) ≦±10 ≦±15
Retardation Spectrum Fig.1 Fig.2
Clear Aperture(mm) φ16 φ16
Holder Diameter(mm) 35 35
HolderThickness(mm) 7.5 7.5
Structure Optical contacted Air gap Optical contacted Air gap
Coating AR No AR AR No AR
Transmittance(%) ≧92% ≧80% ≧70% ≧92% ≧80% ≧70%
Transmittance Spectrum Fig.3 Fig.4 Fig.3% Fig.4




Fig.1 Retardation Spectrum of DUV Achromatic QWP

Fig.2 Retardation Spectrum of  DUV Achromatic HWP

Transmittance Spectrum

Fig.3 Transmittance Spectrum of DUV Achromatic QWP/HWP with Optical contact Type (measured)

Fig.4 Transmittance Spectrum of DUV Achromatic QWP/HWP with Air gap , AR coating Type (measured)