Optical microcavities formed by semiconductor microtubes using a bottlelike geometry

• Published in: Physical review letters Vol. 101; no. 12; p. 127403
• Main Authors: Strelow, Ch, Rehberg, H, Schultz, C M, Welsch, H, Heyn, Ch, Heitmann, D, Kipp, T
• Format: Journal Article
• Language: English
• Published: United States 19-09-2008
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.101.127403

We report on the realization of optical microtube resonators with a bottlelike geometry. The measured eigenenergies and the measured axial field distributions of the modes can be described by a straight and intuitive model using an adiabatic separation of the circulating and the axial propagation. The dispersion of the axial mode energies follows a photonic quasi-Schrödinger equation including a quasipotential which can be determined for the actual geometry of the microtube in a precise and simple way. We show that tailoring the geometry of the microtube bottle resonators enables the realization of a wide variety of mode distributions and dispersion relations.