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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Nanooptik

Humboldt-Universität zu Berlin | Mathematisch-Naturwissen­schaft­liche Fakultät | Institut für Physik | Nanooptik | Publications | Optimization of prism coupling to high-Q modes in a microsphere resonator using a near-field probe

Andrea Mazzei, Stephan Götzinger, Leonardo dS Menezes, Vahid Sandoghdar, and Oliver Benson (2005)

Optimization of prism coupling to high-Q modes in a microsphere resonator using a near-field probe

Optics Communications, 250(4-6):428-433.

In this paper, we demonstrate a novel method for optimizing the in- and out-coupling of light confined in the fundamental high-Q whispering-gallery mode of a microsphere resonator via an external prism coupler. The technique relies on the use of a near-field probe to map the modes of the resonator and to obtain topographical information at the same time. We demonstrate the feasibility and efficiency of this technique by applying it to a sphere with a radius of 59 µm.