Coherently pumped (Kerr) solitons in an ideal optical microcavity are expected to undergo random quantum motion that determines fundamental performance limits applications of the soliton microcombs1. Here this walk and its impact on Kerr timing jitter studied experimentally. The limit is discerned by measuring relative position counter-propagating solitons2. Their features weak interactions als...

We observe fine structure in the resonance spectra of optical microcavities. identify polarization-resolved modes spectrum and find that frequencies split accordance with theoretical prediction. The observed is dominantly caused by an spin-orbit coupling non-paraxial propagation reflection. Both effects are intrinsic, i.e. present ideal rotation-symmetric system, scale inversely proportional to...

S. Savasta, O. Di Stefano, V. Savona, and W. Langbein* Dipartimento di Fisica della Materia e Tecnologie Fisiche Avanzate, Università di Messina, Salita Sperone 31, 98166 Messina, Italy Institut de Physique Théorique, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland Experimentelle Physik IIb, Universität Dortmund, Otto-Hahn-Str. 4, 44221 Dortmund, Germany (Received...

We demonstrate the use of silicon photonic crystal based microcavity structures to perform light modulation at potentially giga-Hertz speeds through the use of optically induced plasma dispersion. The cavity configurations considered have the potential to operate at low pump power when the Q of the cavity involved is maximized.

A ytterbium-doped silica microcavity laser demonstrates stable laser emission while completely submerged in water. To our knowledge, it is the first solid-state laser whose cavity mode interacts with water. The device generates more than 2 microW of output power. The laser performance is presented, and low-concentration biosensing is discussed as a potential application.

In a simulation study, we show that correlated two-dimensional frequency-resolved fluorescence spectra of a quantum dot in a microcavity provide a sensitive probe for the distribution of multiexcitons. Polariton couplings lead to a fine structure of Rabi multiplets that allow us to resolve otherwise overlapping features of the different multiexcitons. These may be used to probe multiexciton gen...

A minimal kinetic model is used to study analytically and numerically flows at a mi-crometer scale. Using the lid-driven microcavity as an illustrative example, the interplay between kinetics and hydrodynamics is quantitatively visualized. The validity of various theories of non-equilibrium thermodynamics of flowing systems is tested in this nontrivial microflow.

Experiments show signatures of a long-sought-after condensed quantum phase---the so-called Bardeen-Cooper-Schrieffer state---in semiconductor microcavity, laying the foundation for future efficient lasers.

Introduction: Two-photon absorption (TPA) has recently received attention with optical performance monitoring of group velocity dispersion, polarisation mode dispersion and optical signal-to-noise ratio having been demonstrated [1, 2]. TPA is a weak, nonlinear process and as such is inefficient. A number of different detectors have previously been used to overcome the low level of TPA in semico...