Naslov
About the role of phase matching between a coated microsphere and a tapered fiber: experimental study

Autori
Ristić, Davor ; Rasoloniaina, Alphonse ; Chiappini, Andrea ; Féron, Patrice ; Pelli, Stefano ; Nunzi Conti, Gualtiero ; Ivanda, Mile ; Righini, Giancarlo Cesare, Gilles ; Ferrari, Maurizio

Izvornik
Optics express (1094-4087) 21 (2013), 18; 20954-20963

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
OCIS codes: (310.1860) Deposition and fabrication; (140.3945) Microcavities; (160.5690) Rare-earth-doped materials; (160.4760) Optical properties; (250.5230) Photoluminescence.

Sažetak
Coatings of spherical optical microresonators are widely employed for different applications. Here the effect of the thickness of a homogeneous coating layer on the coupling of light from a tapered fiber to a coated microsphere has been studied. Spherical silica microresonators were coated using a 70SiO2 – 30HfO2 glass doped with 0.3 mol% Er3+ ions. The coupling of a 1480 nm pump laser inside the sphere has been assessed using a tapered optical fiber and observing the 1530-1580 nm Er3+ emission outcoupled to the same tapered fiber. The measurements were done for different coating thicknesses and compared with theoretical calculations to understand the relationship of the detected signal with the whispering gallery mode electric field profiles.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA