Topological defect lasers
نویسندگان
چکیده
منابع مشابه
1 Topological Defect Inflation ∗
We address some issues of topological defect inflation. (1) We clarify the causal structure of an inflating magnetic monopole. The spacetime diagram shows explicitly that this model is free from the “graceful exit” problem, while the monopole itself undergoes “eternal inflation”. (2) We extend the study of inflating topological defects to Brans-Dicke gravity. Contrary to the case of Einstein gr...
متن کاملA Topological Defect Model of Superfluid Vortices
This paper introduces a nonlinear Schrr odinger model for superruid that captures the process of mutual friction between the superruid and normal uid components of helium II. Superruid vortices are identiied as topological defects in the solution of this equation. A matched asymptotic analysis of Neu 7] is adapted to derive an asymptotic dynamics for the vortices in the case they are widely sep...
متن کاملVacuum polarization by a composite topological defect
In this paper we analyze one-loop quantum effects of a scalar field induced by a composite topological defect consisting a cosmic string on a p-dimensional brane and a (m+ 1)dimensional global monopole in the transverse extra dimensions. The corresponding Green function is presented as a sum of two terms. The first one corresponds to the bulk where the cosmic string is absent and the second one...
متن کاملTopological Defect Dynamics in Operando Battery Nanoparticles
Topological defects can markedly alter nanomaterial properties. This presents opportunities for “defect engineering,” where desired functionalities are generated through defect manipulation. However, imaging defects in working devices with nanoscale resolution remains elusive. We report three-dimensional imaging of dislocation dynamics in individual battery cathode nanoparticles under operando ...
متن کاملThermal analysis of line-defect photonic crystal lasers.
We report a systematic study of thermal effects in photonic crystal membrane lasers based on line-defect cavities. Two material platforms, InGaAsP and InP, are investigated experimentally and numerically. Lasers with quantum dot layers embedded in an InP membrane exhibit lasing at room temperature under CW optical pumping, whereas InGaAsP membranes only lase under pulsed conditions. By varying ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Optics
سال: 2015
ISSN: 2040-8978,2040-8986
DOI: 10.1088/2040-8978/18/1/014005