Parametrical optomechanical oscillations in microbubble resonators: Suppression and enhancement of nonlinear phenomena (Conference Presentation)

Silvia Soria; Gualtiero Nunzi Conti; Daniele Farnesi; Andrea Barucci; Fulvio Ratto; Gabriele Frigenti; Xavier Rosello-Mecho; Miguel V. Andrés; Martina Delgado-Pinar; Giancarlo C. Righini

doi:10.1117/12.2507004

13 March 2019 Parametrical optomechanical oscillations in microbubble resonators: Suppression and enhancement of nonlinear phenomena (Conference Presentation)

Silvia Soria, Gualtiero Nunzi Conti, Daniele Farnesi, Andrea Barucci, Fulvio Ratto, Gabriele Frigenti, Xavier Rosello-Mecho, Miguel V. Andrés , Martina Delgado-Pinar, Giancarlo C. Righini

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Proceedings Volume 10904, Laser Resonators, Microresonators, and Beam Control XXI; 109040Q (2019) https://doi.org/10.1117/12.2507004
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Whispering gallery mode resonators (WGMR) have attracted a great interest in the last decade. WGMR have been fabricated in different geometries, solid and hollow, spherical, toroidal, and bottled shaped. Hollow spherical WGMR or microbubble resonators (MBR) are the last arrived in the family of resonators. The approach used for their fabrication is based on surface tension driven plastic deformation on a pressurized capillary, similar to glassblowing. Using such technique we are able to fabricate large surface area and thin spherical shells with high quality factor (Q). MBR are efficient phoxonic cavities that can sustain both optical photons and acoustic phonons. It has been demonstrated that MBR can be used to study Turing comb patterns (Kerr modulation) and Stimulated Brillouin Scattering (SBS). Radiation pressure is another mechanism that also leads to excitation of acoustic phonons with lower frequencies, in the range of hundreds of kHz to tens of MHz in the case of silica MBR. The frequency of such oscillations occurs very close to the mechanical eigenfrequencies of the cavity. We have studied the temporal behavior of the cavity, the coexistence and the suppression of the oscillation while generating Turing comb patterns. The observed phenomenology can be explained by the geometrical characteristics of a MBR. MBRs are spheroidal WGM resonators with quite dense spectral characteristics. The total dispersion of MBR is anomalous and large, as expected for very large MBR. Thus, Kerr comb formation is allowed for all MBR used in this work.

Conference Presentation

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Silvia Soria, Gualtiero Nunzi Conti, Daniele Farnesi, Andrea Barucci, Fulvio Ratto, Gabriele Frigenti, Xavier Rosello-Mecho, Miguel V. Andrés , Martina Delgado-Pinar, and Giancarlo C. Righini "Parametrical optomechanical oscillations in microbubble resonators: Suppression and enhancement of nonlinear phenomena (Conference Presentation)", Proc. SPIE 10904, Laser Resonators, Microresonators, and Beam Control XXI, 109040Q (13 March 2019); https://doi.org/10.1117/12.2507004

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KEYWORDS

Resonators

Spherical lenses

Acoustics

Phonons

Capillaries

Fabrication

Modulation

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