Journal ArticleDOI
The ring laser gyro
Weng W. Chow,Julio Gea-Banacloche,Leno M. Pedrotti,Virgil E. Sanders,Wolfgang P. Schleich,Marlan O. Scully +5 more
TLDR
A review of active and passive ring laser devices is given in this paper, with special emphasis given to the problems associated with the achievement of greater sensitivity and stability with respect to the ring laser gyroscope.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.read more
Citations
More filters
Journal ArticleDOI
Artificial Brownian motors: Controlling transport on the nanoscale
Peter Hänggi,Fabio Marchesoni +1 more
TL;DR: In this paper, the constructive role of Brownian motion is exemplified for various physical and technological setups, which are inspired by the cellular molecular machinery: the working principles and characteristics of stylized devices are discussed to show how fluctuations, either thermal or extrinsic, can be used to control diffusive particle transport.
Journal ArticleDOI
Enhanced sensitivity at higher-order exceptional points
Hossein Hodaei,Absar U. Hassan,Steffen Wittek,Hipolito Garcia-Gracia,Ramy El-Ganainy,Demetrios N. Christodoulides,Mercedeh Khajavikhan +6 more
TL;DR: Higher-order exceptional points are observed in a coupled cavity arrangement—specifically, a ternary, parity–time-symmetric photonic laser molecule—with a carefully tailored gain–loss distribution and it is found that the frequency response follows a cube-root dependence on induced perturbations in the refractive index.
Book ChapterDOI
Sensors and Actuators
TL;DR: The history of attitude sensor development has emphasized increased resolution and accuracy as well as decreased size, weight, and power (often abbreviated as SWaP).
Journal ArticleDOI
Optical resonators with whispering-gallery modes-part II: applications
TL;DR: In this article, the authors review photonic applications of dielectric whispering-gallery mode (WGM) resonators and trace the growth of the technology from experiments with levitating droplets of aerosols to ultrahigh-Q solid state crystalline and integrated on-chip microresonators.
Journal ArticleDOI
Ring-laser tests of fundamental physics and geophysics
TL;DR: In this article, the capability of ring-laser gyros for measurements of geodesic interest, including seismometry and earth tides, and for detection of other sources of non-reciprocal refractive indices, including axions and CP violation, are discussed.