Dense arrays of microscopic optical vortex generators from femtosecond direct laser writing of radial birefringence in glass
Langue
en
Article de revue
Ce document a été publié dans
Applied Physics Letters. 2012-04-30, vol. 100, n° 18, p. 181901 (1-4)
American Institute of Physics
Résumé en anglais
We report on the generation of permanent singular light mode converters at the microscale using femtosecond direct laser writing in photo-thermo-refractive glass. It relies on the irreversible lightinduced radial birefringence ...Lire la suite >
We report on the generation of permanent singular light mode converters at the microscale using femtosecond direct laser writing in photo-thermo-refractive glass. It relies on the irreversible lightinduced radial birefringence in the bulk of the material. The ability of such birefringence pattern to convert the spin angular momentum of light into orbital optical angular momentum is exploited to demonstrate the production of large arrays of optical vortex generators with surface densities up to 104 cm−2.< Réduire
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