Passive and active whispering gallery mode microresonators in optical engineering

Dario Laneve; Mario C. Falconi; Giuseppe Palma; Cosimo Scarnera; Francesco Chiavaioli; Daniele Farnesi; Tetsuo Kishi; Andrea Chiappini; Gualtiero Nunzi Conti; Silvia Soria; Virginie Nazabal; Francesco Baldini; Maurizio Ferrari; Francesco Prudenzano

doi:10.1117/12.2512038

4 March 2019 Passive and active whispering gallery mode microresonators in optical engineering

Dario Laneve, Mario C. Falconi, Giuseppe Palma, Cosimo Scarnera, Francesco Chiavaioli, Daniele Farnesi , Tetsuo Kishi, Andrea Chiappini, Gualtiero Nunzi Conti, Silvia Soria, Virginie Nazabal, Francesco Baldini, Maurizio Ferrari, Francesco Prudenzano

Author Affiliations +

Proceedings Volume 10904, Laser Resonators, Microresonators, and Beam Control XXI; 1090417 (2019) https://doi.org/10.1117/12.2512038
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

The paper illustrates both review and original simulation results obtained via the modelling of different set-ups based on optical microresonators for applications in optical sensing, lasing and spectroscopy. Passive microbubbles and microspheres coupled via long period fiber gratings (LPGs) and tapered fibers are designed and/or constructed for sensing of biological fluids in the near infrared (NIR) wavelength range. Rare earth doped chalcogenide glass integrated microdisks are designed for active sensing in the medium infrared (MIR) wavelength range. A home-made numerical code modelling the optical coupling and the active behavior via rate equations of ion population is employed for a realistic design, by taking into account the most important active phenomena in rare earths, such as the absorption rates, the stimulated emission rates, the amplified spontaneous emission, the lifetime and branching ratios, the ion-ion energy transfers and the excited state absorption. Optical coupling is obtained by employing ridge waveguides, for micro-disks, and tapered fibers, for microspheres and microbubbles. Different dopant rare earths as Erbium (Er³⁺) and Praseodymium (Pr³⁺) are considered.

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Dario Laneve, Mario C. Falconi, Giuseppe Palma, Cosimo Scarnera, Francesco Chiavaioli, Daniele Farnesi , Tetsuo Kishi, Andrea Chiappini, Gualtiero Nunzi Conti, Silvia Soria, Virginie Nazabal, Francesco Baldini, Maurizio Ferrari, and Francesco Prudenzano "Passive and active whispering gallery mode microresonators in optical engineering", Proc. SPIE 10904, Laser Resonators, Microresonators, and Beam Control XXI, 1090417 (4 March 2019); https://doi.org/10.1117/12.2512038

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