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|Title:||Tellurite microspheres for nanoparticle sensing and novel light sources|
|Citation:||Optics Express, 2014; 22(10):11995-12006|
|Publisher:||Optical Society of America|
|Organisation:||Institute for Photonics & Advanced Sensing (IPAS)|
|Yinlan Ruan, Keiron Boyd, Hong Ji, Alexandre Francois, Heike Ebendorff-Heidepriem, Jesper Munch, and Tanya M. Monro|
|Abstract:||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.|
|Rights:||© 2014 Optical Society of America|
|Appears in Collections:||IPAS publications|
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