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Tunable strong coupling of two adjacent optical λ/2 Fabry-Pérot microresonators

  • Strong optical mode coupling between two adjacent λ/2 Fabry-Pérot microresonators consisting of three parallel silver mirrors is investigated experimentally and theoretically as a function of their detuning and coupling strength. Mode coupling can be precisely controlled by tuning the mirror spacing of one resonator with respect to the other by piezoelectric actuators. Mode splitting, anti-crossing and asymmetric modal damping are observed and theoretically discussed for the symmetric and antisymmetric supermodes of the coupled system. The spectral profile of the supermodes is obtained from the Fourier transform of the numerically calculated time evolution of the individual resonator modes, taking into account their resonance frequencies, damping and coupling constants, and is in excellent agreement with the experiments. Our microresonator design has potential applications for energy transfer between spatially separated quantum systems in micro optoelectronics and for the emerging field of polaritonic chemistry.

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Author of HS ReutlingenStuhl, Alexander; Brecht, Marc
Erschienen in:Optics Express
Publisher:Optical Society of America
Place of publication:Washington, DC
Document Type:Journal article
Publication year:2020
Page Number:9
First Page:485
Last Page:493
DDC classes:530 Physik
Open access?:Ja
Licence (German):License Logo  Open Access