ZPol Radial Polarizer

Features Turns any linear polarized laser beam to radially polarized beam Generate "Z" polarization High transmission Large aperture   Produced by Nanophoton

 

The ZPol turns any linear polarized laser into Radial or Azimuthal polarized light. This Radial polarized light can in turn be made to generate Z Polarization, or polarization in the direction of light propagation.

Z Polarization is produced by a combination of ZPol and a high NA lens. The focal spot given by the lens has strong Z polarized light resulting from interference of radial polarization at the geometrical focus. In other words you have a strong longitudinal electric field that oscillates along the optical axis at the center of the focus spot.

With Azimuthal polarization a strong longitudinal magnetic field is observed that oscillates along the optical axis at the center of the focus spot.

Z polarization enables one to obtain 3D orientation of molecules and crystals.

Specifications

Size:	25mm diameter x 5mm thickness
Clear aperture:	10mm
Material:	Multi-order quartz waveplate
Pattern:	Four sections
Retardation error:	0.5 ±0.05 lambda as a waveplate
Optical axis error:	± 2°
Group delay dispersion:	~ 100-200 fs^2 >100 fs negligible
Transmission:	>95% typical