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Frequency splittings in deformed optical microdisk cavities
Yi, Chang-Hwan,Kullig, Julius,Kim, Chil-Min,Wiersig, Jan American Physical Society 2017 Physical Review A Vol.96 No.2
<P>We study the frequency splitting of nearly degenerate optical modes in weakly deformed microdisks. The analysis is restricted to even-and odd-parity modes in cavities with a mirror-reflection symmetry. The frequency splitting is explained in a semiclassical approach by dynamical tunneling (resonance-assisted tunneling) between clockwise-and counterclockwise-propagating waves. We derive semiclassical predictions for the frequency splittings which are in good agreement with full numerical calculations. Two deformations are studied in detail, the ellipse and the quadrupole, representing a deformation with integrable and nonintegrable ray dynamics. Furthermore, the differences between Dirichlet and dielectric boundary conditions are discussed.</P>
Properties and Prospects of ZnSe-Based Quantum Dot Microcavity VCSEL Structures
K. Sebald,H. Lohmeyer,J. Kalden,T. Meeser,J. Gutowski,C. Kruse,A. Gust,D. Hommel,J. Wiersig,N. Baer,F. Jahnke 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.1
The emission properties of ZnSe-based monolithic microcavities with either quantum wells or quantum dots embedded are studied. These pillar structured samples reveal three-dimensional conned optical modes with high-quality factors and small mode volumes conrmed by theoretical calculations. We observed a strong enhancement of the emission intensity for quantum dots being in the spectral resonance with the cavity modes. The Purcell eect was probed by using timeresolved measurements. A pronounced enhancement of the spontaneous emission rate of quantum dots coupled to the discrete optical modes of the cavities demonstrates the occurrence of cavity quantum electrodynamics eects. The observed enhancement depends systematically on the pillar diameter and, thus, on the Purcell factor of the individual pillars. The emission properties of ZnSe-based monolithic microcavities with either quantum wells or quantum dots embedded are studied. These pillar structured samples reveal three-dimensional conned optical modes with high-quality factors and small mode volumes conrmed by theoretical calculations. We observed a strong enhancement of the emission intensity for quantum dots being in the spectral resonance with the cavity modes. The Purcell eect was probed by using timeresolved measurements. A pronounced enhancement of the spontaneous emission rate of quantum dots coupled to the discrete optical modes of the cavities demonstrates the occurrence of cavity quantum electrodynamics eects. The observed enhancement depends systematically on the pillar diameter and, thus, on the Purcell factor of the individual pillars.