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arXiv · 1201.2645

Laser-induced radial birefringence and spin-to-orbital optical angular momentum conversion in silver-doped glasses

Jafar Mostafavi Amjad·Hamid Reza Khalesifard·Sergei Slussarenko·Ebrahim Karimi·Lorenzo Marrucci·Enrico Santamato
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Abstract

Samples of Ag$^+$/Na$^{+}$ ion-exchanged glass that have been subject to intense laser irradiation may develop novel optical properties, as a consequence of the formation of patterns of silver nanoparticles and other structures. Here, we report the observation of a laser-induced permanent transverse birefringence, with the optical axis forming a radial pattern, as revealed by the spin-to-orbital angular momentum conversion occurring in a probe light beam. The birefringence pattern can be modeled well as resulting from thermally-induced stresses arising in the silver-doped glass during laser exposure, although the actual mechanism leading to the permanent anisotropy is probably more complex.

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Jafar Mostafavi Amjad, Hamid Reza Khalesifard, Sergei Slussarenko, Ebrahim Karimi, Lorenzo Marrucci, Enrico Santamato. 2012-01-12. Laser-induced radial birefringence and spin-to-orbital optical angular momentum conversion in silver-doped glasses. https://doi.org/10.1063/1.3610474

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