Tellurite microspheres for nanoparticle sensing and novel light sources | Zendy

Yinlan Ruan | Zendy; Keiron Boyd | Zendy; Hong Ji | Zendy; F. Alexandre | Zendy; Heike EbendorffHeidepriem | Zendy; Jesper Munch | Zendy; Tanya M. Monro | Zendy

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Tellurite microspheres for nanoparticle sensing and novel light sources

Author(s) -

Yinlan Ruan,

Keiron Boyd,

Hong Ji,

F. Alexandre,

Heike EbendorffHeidepriem,

Jesper Munch,

Tanya M. Monro

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.011995

Subject(s) - materials science , spheres , whispering gallery wave , optics , nanoparticle , refractive index , microsphere , integrating sphere , sphericity , photon upconversion , laser , visible spectrum , mie scattering , optoelectronics , nanotechnology , light scattering , luminescence , scattering , physics , resonator , astronomy , chemical engineering , engineering , composite material

High index Er-Yb codoped tellurite spheres with diameter of 9 μm and good sphericity were fabricated using a CO(2) laser. Upconversion modulated whispering gallery modes with a quality factor of 45,000 were observed in the sphere dipped in methanol. Refractometric sensing with detection sensitivity of 7.7 nm/RIU was demonstrated using a 9 μm diameter sphere. Such high index spheres have the potential to be used for nanoparticle sensing and mid-IR frequency conversion.

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