True Zero Order Waveplates are constructed of a crystal quartz waveplate in contact with a high precision BK7 glass window. As the waveplate is very thin and easy to be damaged, the Bk7 plate's function is to strengthen the waveplate. A dual-sided anti-reflection (AR) coating helps minimize surface reflection losses and return loss.
Features:
- Cemented by Epoxy
- Retardations of λ/2 and λ/4
- Wide Angle Acceptance
- Wide Wavelength Bandwidth
- Better Temperature Bandwidth
True Zero Order Waveplates Specifications:
Material |
Crystal Quartz, laser quality |
Construction |
Cemented |
Retardance |
λ/4 and λ/2 |
Retardance Tolerance |
< λ/300 |
Dimension Tolerance |
+0.0/-0.2mm |
Clear Aperture |
> 90% central |
Wavefront Distortion |
λ/8 @632.8nm |
Parallelism |
< 1 arc second |
Surface Quality |
20-10 scratch-dig |
AR Coating |
R < 0.25% |
Damage Threshold |
> 500mJ/cm2, 20ns, 20Hz @1064nm |
Ordering Information:
Description: True Zero Order WavePlate
Part Number: WPZT–Retardance–Wavelength–Dimension–Coating–Mount
Retardance: λ/2 or λ/4
Wavelength: 405nm,488nm,532nm,546nm,632.8nm,670nm,780nm,808nm,850nm,980nm,
1030nm,1047nm,1053nm,1064nm,1310nm,1480nm,1550nm,2020nm
Dimension: Φ10.0mm, Φ12.7mm, Φ15.0mm, Φ20.0mm, Φ25.4mm, Φ30.0mm or Others
Coating: AR coating or Uncoated
Mount: Φ25.4mm, Φ30.0mm or Unmounted