Controlling the optical properties of quantum emitters by optical confinement in a tunable microcavity

Raphael Gutbrod; Alexey I. Chizhik; Anna M. Chizhik; Dmitry Khoptyar; Sebastian Bär; Alfred J. Meixner

doi:10.1117/12.853858

10 May 2010 Controlling the optical properties of quantum emitters by optical confinement in a tunable microcavity

Raphael Gutbrod, Alexey I. Chizhik, Anna M. Chizhik, Dmitry Khoptyar, Sebastian Bär, Alfred J. Meixner

Proceedings Volume 7712, Nanophotonics III; 77120Q (2010) https://doi.org/10.1117/12.853858
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

Optical microresonators are structures which confine light to a small region in the range of one wavelength. The radiation of a quantum emitter is coupled to cavity resonances which leads to an optical confinement of the broadband fluorescence. A practical design for this single-mode microresonator is formed by two silver mirrors enclosing a transparent dielectric medium with single quantum emitters. In our tunable microresonator, the resonator length can be changed reversibly with piezoelectric elements to a distinct position corresponding to a specific emission wavelength. The local mode structure of the electromagnetic field is changed at this position which results in a redistribution of the fluorescence and a modification of the lifetime for the same single molecule. The radiative coupling of the emitter to the electromagnetic field is also determined by the orientation of its transition dipole moment with respect to the cavity normal. The doughnut laser modes used for illumination of the single molecule allow us by analyzing the excitation patterns to determine its three-dimensional orientation in the microresonator. In addition, these modes provide an excitation pattern which can be used to detect the longitudinal position of a fluorescent bead in the microresonator with an accuracy of a few nanometers.

Citation Download Citation

Raphael Gutbrod, Alexey I. Chizhik, Anna M. Chizhik, Dmitry Khoptyar, Sebastian Bär, and Alfred J. Meixner "Controlling the optical properties of quantum emitters by optical confinement in a tunable microcavity", Proc. SPIE 7712, Nanophotonics III, 77120Q (10 May 2010); https://doi.org/10.1117/12.853858

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