Photonic nanojet properties of dielectric microcylinders

Arash Darafsheh; Douglas Bollinger

doi:10.1117/12.2252758

16 February 2017 Photonic nanojet properties of dielectric microcylinders

Arash Darafsheh, Douglas Bollinger

Author Affiliations +

Proceedings Volume 10106, Integrated Optics: Devices, Materials, and Technologies XXI; 101061U (2017) https://doi.org/10.1117/12.2252758
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

In recent years, it has been demonstrated that micron-scale dielectric spheres and cylinders can form an intense sharply focused photon beam, termed a photonic nanojet. The photonic nanojet effect can be used in a broad range of biomedical and photonics applications, including super-resolution microscopy, optical endoscopy, spectroscopy, and nanolithography. In this work, by means of finite-difference time-domain (FDTD) numerical simulation, we studied the nanojet properties of dielectric microcylinders over a wide range of diameters (4λ-20λ) and refractive indices (1.5-2.0), where λ is the wavelength of light. We studied how the nanojet beam size, intensity, and focal distance vary as a function of size and refractive index of the microcylinders, and refractive index contrast between the microcylinders and the background medium surrounding them.

Citation Download Citation

Arash Darafsheh and Douglas Bollinger "Photonic nanojet properties of dielectric microcylinders", Proc. SPIE 10106, Integrated Optics: Devices, Materials, and Technologies XXI, 101061U (16 February 2017); https://doi.org/10.1117/12.2252758

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