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arXiv · 1210.7592

Photonic crystal formation on optical nanofibers using femtosecond laser ablation technique

K. P. Nayak·K. Hakuta
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Abstract

We demonstrate that thousands of periodic nano-craters are fabricated on a subwavelength-diameter tapered optical fiber, an optical nanofiber, by irradiating with just a single femtosecond laser pulse. A key aspect of the fabrication is that the nanofiber itself acts as a cylindrical lens and focuses the femtosecond laser beam on its shadow surface. We also demonstrate that such periodic structures on the nanofiber, act as a 1-D photonic crystal (PhC). Such PhC structures on the nanofiber will strongly enhance the field confinement in such a tapered fiber-based system and may open new avenues in nanophotonics and quantum information technology.

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K. P. Nayak, K. Hakuta. 2012-10-29. Photonic crystal formation on optical nanofibers using femtosecond laser ablation technique. https://doi.org/10.1364/oe.21.002480

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