Photonic crystal formation on optical nanofibers using femtosecond laser ablation technique

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.

9 pages, 5 figures

References in corpus (3)

• The Quantum Internet
• Efficient channeling of fluorescence photons from single quantum dots into guided modes of optical nanofiber
• Single Atoms on an Optical Nanofiber

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