What is it about?

For the first time, a stable “helical polarization distribution” Bessel beam was generated by using a fs laser structured glass plate. Besides, such a z-variable-polarized laser beam was implemented for laser materials processing namely to imprint "twisted silica glass".

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Why is it important?

We proposed a novel concept to extend the polarization manipulation along the optical path, which provides new perspectives in polarization transformation and therefore, enriches the state of the art of light manipulation. As a demonstration, this structured light beam was exploited to imprint chiral optical properties in a glass.


This 3D polarization structuring approach will benefit the fundamental understanding of light-matter interaction and will provide ultrafast light manipulation with additional degrees of freedom. For example, this could provide a platform for laser-based production of cholesteric liquid crystal analogous optical devices using tiny lengths of inorganic glass i.e., "twisted silica glass".

Matthieu Lancry
University Paris Saclay

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This page is a summary of: 3D structured Bessel beam polarization and its application to imprint chiral optical properties in silica, APL Photonics, June 2023, American Institute of Physics, DOI: 10.1063/5.0140843.
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