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Journal ArticleDOI: 10.1007/BF02847289

Optical mode-coupling in a ring due to a back-scatterer

01 Feb 1993-Pramana (Springer India)-Vol. 40, Iss: 2, pp 107-112
Abstract: The coupling of light waves travelling clockwise and counterclockwise along an optical ring due to a back-scattering element is studied. An asymmetric mode splitting occurs as a consequence of the discontinuity suffered by the waves at the scattering point. The mode splitting shows up in an interference pattern and lends itself to an experimental verification. more

Topics: Mode coupling (57%), Scattering (50%)

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.99.173603
A. Mazzei1, Stephan Götzinger2, L. de S. Menezes3, Gert Zumofen2  +2 moreInstitutions (3)
Abstract: We present experiments where a single subwavelength scatterer is used to examine and control the backscattering induced coupling between counterpropagating high-Q modes of a microsphere resonator. Our measurements reveal the standing wave character of the resulting symmetric and antisymmetric eigenmodes, their unbalanced intensity distributions, and the coherent nature of their coupling. We discuss our findings and the underlying classical physics in the framework common to quantum optics and provide a particularly intuitive explanation of the central processes. more

Topics: Quantum optics (56%), Cavity quantum electrodynamics (53%), Whispering-gallery wave (53%) more

275 Citations

Journal ArticleDOI: 10.1016/S0370-1573(96)00029-4
Rajendra Bhandari1Institutions (1)
01 Mar 1997-Physics Reports
Abstract: The phase shifts experienced by a polarized light wave when it propagates through media with arbitrary birefringence, dichroism and depolarizing properties, while on the one hand provide the basis for a variety of optical devices and experiments, on the other provide a powerful means of understanding unitary evolution, nonunitary evolution and decoherence of two-state quantum systems by virtue of a mathematical isomorphism of the two systems. These also help understand aspects of evolution of classical systems under the group of rotations in three-dimensional space, namely the SO(3) group, by virtue of its homomorphism with the group SU(2) governing unitary evolution of polarized light waves. In this review we present a survey and analysis of recent work on topological phases with polarization of light which has revealed several counterintuitive features of such phase shifts such as 2 nπ anholonomies, nonlinear and discontinuous behaviour originating hi singularities, peculiar spectral dependence, etc. We point out several areas where these results may find practical application, for example endless phase correction in interferometric sensors, fast switching spatial light modulators, phase shifters with unusual chromatic properties, phasing of antenna arrays, etc. Several useful theoretical insights relevant to polarization optics, quantum mechanics, classical mechanics and other areas of physics, obtained from the work on polarization states are described and some directions for future work are indicated. more

Topics: Polarization (waves) (56%), Quantum decoherence (53%), Quantum (51%)

225 Citations

Journal ArticleDOI: 10.1088/1464-4258/7/7/003
01 Jul 2005-Journal of Optics
Abstract: We consider a system of two eccentric spheres, wherein an inclusion sphere is embedded in a larger sphere with a different refractive index. We demonstrate broken azimuthal degeneracy for non-axisymmetric illumination resulting in splittings in extinction peaks. The mode splitting and mixing effects are shown to be nonresonant, valid for all modes having sufficient quality factors. We demonstrate strong dependence of the splittings on the polarization of the incident light to the extent that one can diagnose the polarization characteristics of the whispering gallery mode. We show how a set of quantum numbers can be assigned to a given peak of the split resonances. We further investigate the field distribution in suitable coordinate planes in order to bring out the close relation between the magnetic quantum number, the polarization of the bisphere modes and that of incident light. more

Topics: Optical polarization (59%), Whispering-gallery wave (53%), Magnetic quantum number (53%) more

13 Citations


Journal ArticleDOI: 10.1103/REVMODPHYS.57.61
Abstract: This paper presents a review of both active and passive ring laser devices. The operating principles of the ring laser are developed and discussed, with special emphasis given to the problems associated with the achievement of greater sensitivity and stability. First-principle treatments of the nature of quantum noise in the ring laser gyro and various methods designed to avoid low-rotation-rate lock-in are presented. Descriptions of state-of-the-art devices and current and proposed applications (including a proposed test of metric theories of gravity using a passive cavity ring laser) are given. more

Topics: Ring laser (62%), Ring laser gyroscope (61%)

536 Citations

Journal ArticleDOI: 10.1103/PHYSREVA.8.2103
Leonel N. Menegozzi1, Willis E. Lamb1Institutions (1)
01 Oct 1973-Physical Review A
Abstract: Development of a systematic formulation of the theory of a ring laser which is based on first principles and uses a well-known model for laser operation. A simple physical derivation of the electromagnetic field equations for a noninertial reference frame in uniform rotation is presented, and an attempt is made to clarify the nature of the Fox-Li modes for an open polygonal resonator. The polarization of the active medium is obtained by using a Fourier-series method which permits the formulation of a strong-signal theory, and solutions are given in terms of continued fractions. It is shown that when such a continued fraction is expanded to third order in the fields, the familiar small-signal ring-laser theory is obtained. more

Topics: Electromagnetic field (52%), Ring laser (51%)

107 Citations

Journal ArticleDOI: 10.1103/PHYSREVLETT.63.318
Abstract: Mesures quantitatives de la reponse a l'harmonique second des surfaces Al(111), Al(100) et polycristallines soumises a un rayonnement de 1,06 μm sous ultravide. Comparaison avec les etudes theoriques qui prevoient que la reponse est sensible au profil de la densite de charge en surface. Effet de la structure de bande more

83 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.65.2642
Abstract: A classical two-level system has been realized by coupling two propagation or two polarization modes of an optical ring resonator. This system can be driven by periodic modulation of either the coupling or the bare mode frequencies, at sufficient strength to violate the rotating-wave approximation (RWA) on resonance. Landau-Zener transitions, Rabi oscillation with non-RWA signature, and Autler-Townes doublets have been observed. more

Topics: Rabi cycle (58%), Resonator (52%)

72 Citations

Journal ArticleDOI: 10.1103/PHYSREVLETT.61.318
Abstract: We show experimentally that propagation of light waves in an effectively rotating fiber-optic ring resonator leads to a photon band structure due to interference of elastically scattered waves. The rotation is simulated by means of a Faraday-active element in the ring. more

Topics: Sagnac effect (63%), Resonator (57%), Optical cavity (54%) more

33 Citations

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