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Dual Wavelength Waveplate

Dual Wavelength waveplateDual Wavelength waveplates are designed to be used in dual wavelength setups and operate as a quarter-wave plate at one wavelength and as a half-wave plate at the second wavelength. One common application is separation of different wavelengths with a polarizing beamsplitter by rotating the polarization of one wavelength by 90°, and leaving the other unchanged. This frequently occurs in nonlinear doubling or tripling laser sources such as Nd:YAG (1064/532/355/266nm).


- Operates as λ/4@λ1 & as λ/2@λ2

- High Damage Threshold

- Narrow bandwidth and temperature range

- Other wavelength and retardation combinations available

Dual Wavelength waveplates Specifications:



 Crystal Quartz, laser quality


 Single plate

 Operating Wavelengths

 532 nm & 1064 nm

 Retardance Tolerance

 < λ/100 at both wavelengths at 23° C

 Dimension Tolerance


 Clear Aperture

 > 90% central

 Wavefront Distortion

 λ/8 @632.8nm


 < 1 arc second

 Surface Quality

 20-10 scratch-dig

 AR Coating

 R < 0.5% at both wavelengths

 Damage Threshold

 > 5J/cm2, 20ns, 20Hz@ 1064 nm

Ordering Information:

      Description:   Dual Wavelength WavePlate

      Part Number:  WPD–Retardance–Dimension–Coating–Mount

      Retardance:  λ/2@1064nm & λ@532nm, λ@1064nm & λ/2@532nm, λ/2@1064nm & λ/4@532nm, 

                           λ/4@1064nm & λ/2@532nm, λ/4@1064nm & λ@532nm

       Dimension:   Φ10.0mm, Φ12.7mm, Φ15.0mm, Φ20.0mm, Φ25.4mm, or Others 

       Coating:     AR coating or Uncoated

       Mount:      Φ25.4mm, Φ30.0mm or Unmounted