北京菲腾光电科技有限公司

 
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S-waveplate is a super-structured space-variant waveplate which converts linear polarization to azimuthal or radial polarization, and circular polarization to optical vortex.


Radial polarization converter S-waveplate is the most common availabe space-variant waveplate. Fabrication of S-waveplate is based on inscription of self-organized nanogratings inside fused silica glass using a femtosecond laser.

Radial polarization converter features:
  • Converts linear polarization to radial polarization or azimuthal

  • Converts circular polarization to optical vortex

  • High damage threshold

  • 55-90% transmission (wavelength dependent)

  • Large aperture (up to 15 mm; standard is 6 mm)

  • Continuous pattern – no segments

Applications:
  • STED microscopy (ref. No. 20)

  • Micromachining (ref. No. 1, 2, 12)

  • Microdrilling high-aspect-ratio channels (ref. No. 13)

  • Generate any cylindrical vector vortex (ref. No. 17)

  • Multiple particle trapping (ref. No. 14). Video link

  • Micro-mill driven by optical tweezers (ref. No. 14). Video link

  • Use as intracavity polarization-controlling element in cladding-pumped ytterbium doped fiber laser for radially polarized output beam generation (ref. No. 15)

  • Observation of photonic spin Hall effect with rotational symmetry breaking (ref. No. 16)

  • Realization of polarization evolution on higher-order Poincaré sphere (ref. No. 18)

  • Direct transformation of linearly polarized Gaussian beam into vector-vortex beams with various spatial patterns (ref. No. 19)

  • Engineering of novel optical materials for applications in security and data storage with highly improved marking capacity due to fine nanoparticle position control (ref. No. 21)

  • Addition and subtraction of optical orbital angular momentum (ref. No. 22)

  • Hybrid classical-quantum communication (ref. No. 23)

Acknowledgment

Southampton University applied for patent application and appointed exclusivity in commercializing activities for Altechna R&D Ltd. Custom development of machining heads and optical assemblies incorporating the radial/azimuthal polarizer is possible on request.



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