Z polarizer(Radial polarizer) ZPol

Create a "polarization Z" light which vibrates in the direction of light propagation. Exhibits its power in three-dimensional measurement of the orientation of the crystal and molecular. ZPol produces a "polarizing z" light that vibrates in the direction (z) of the light traveling direction. Y-polarized light shear wave, polarized light and x, tempting to think light is not polarized in z. However, the three-dimensional space exist naturally polarized in the z direction. Nanophoton's ZPol, easily create z polarization, which had been forgotten until now. ZPol makes it possible to measure in three dimensions x and y and z orientation of the crystals and molecules.

PDFZPol catalog(PDF) [254K]
Z polarizer(Radial polarizer) ZPol

Z polarizer(Radial polarizer) Achieved to drastically reduce of price of ZPol!

We have a price reduction to 280,000 yen for the element of quad 532nm and 785nm center wavelength due to a significant reduction in manufacturing costs by reviewing manufacturing methods of Z polarizer (Radial polarizer). Please consider your purchase means on this occasion.


How to use

The incident Zpol linearly polarized light can be radially polarized light, and lens to its radial polarized light. It can produce a field of the light beam has an angular dispersion by each condenser lens with a large electric field component in the z-direction by their interference. It can be made even azimuthal polarization by choice, it is possible to produce a light collecting field that the z component of the electric field to zero in this case.

How to use ZPol


Standard wavelength: 532nm and 785nm(In other wavelenghth, contact us.)
Also available in ultra-short femtosecond laser pulse.


Example of use

The following illustration is an example of applying the ZPol to measure Raman scattering of carbon nanotubes. It is the result of the measurement by switching the x polarization and z polarized light using ZPol. It is found that high sensitivity is measured by polarization z (vibration in the direction perpendicular to the axis of the tube) breathing vibration of the nanotubes located on the axis x.

Tip enhanced raman spectrum of CNT
▲Tip enhanced raman spectrum of carbon nanotubes. Specific Raman peaks are selectively observed by changing z polarized light and x polarized light by using ZPol. Y. Saito et al., Chem. Phys. Lett. 410, 136 (2005).)(RIKEN)



Diameter of mountaing frame Φ=25mm
Effective diameter Φ=10mm