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S-waveplate (Radial Polarization Converter)

S-waveplate (Radial Polarization Converter)



Substrate dimensions

Ø25.4 x 3 mm

Surface quality, S-D


Surface flatness, P-V

<λ/8 @ 632.8 nm

Clear aperture

Ø2 – 15 mm

AR coatings

On request

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S-waveplate is a space-variant retarder that converts linear polarization to radial or azimuthal polarization. The product is unique for its high damage threshold, which exceeds that of alternative devices by 100 times. Unique results are achieved through the formation of subwavelength nanogratings inside fused silica glass. The enabling technology was developed by Prof. Peter G. Kazansky’s group in the Optoelectronics Research Centre at the University of Southampton.

Vector beams can be beneficial in polarization-sensitive applications. For example, a radially polarized beam is more efficient at drilling and cutting high-aspect-ratio features in metals. Vector beams are also applicable in optical tweezers, laser micromachining, STED microscopy and two-photon-excitation fluorescence microscopy.

Standard S-waveplate models are available for 343 nm, 354 nm, 488 nm, 515 nm, 532 nm, 632 nm, 800 nm, 1030 nm, 1064 nm and 1550 nm wavelengths (with custom wavelengths available on request). Dielectric anti-reflection coatings can be applied on both converter sides.

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