We review the field of cavity optomechanics, which explores the interaction between electromagnetic radiation and nano- or micromechanical motion This review covers the basics of optical cavities and mechanical resonators, their mutual optomechanical interaction mediated by the radiation pressure force, the large variety of experimental systems which exhibit this interaction, optical measurements of mechanical motion, dynamical backaction amplification and cooling, nonlinear dynamics, multimode optomechanics, and proposals for future cavity quantum optomechanics experiments In addition, we describe the perspectives for fundamental quantum physics and for possible applications of optomechanical devices

Cavity Optomechanics

Photonic crystal fibers guide light by corralling it within a periodic array of microscopic air holes that run along the entire fiber length Largely through their ability to overcome the limitations of conventional fiber optics—for example, by permitting low-loss guidance of light in a hollow core—these fibers are proving to have a multitude of important technological and scientific applications spanning many disciplines The result has been a renaissance of interest in optical fibers and their uses

https://science.sciencemag.org/content/sci/299/5605/358.full.pdf

Photonic crystal fibers

A fast-Fourier-transform method of topography and interferometry is proposed. By computer processing of a noncontour type of fringe pattern, automatic discrimination is achieved between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour-generation techniques. The method has advantages over moire topography and conventional fringe-contour interferometry in both accuracy and sensitivity. Unlike fringe-scanning techniques, the method is easy to apply because it uses no moving components.

Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry

We review the recent developments in the area of optical fiber grating sensors, including quasi-distributed strain sensing using Bragg gratings, systems based on chirped gratings, intragrating sensing concepts, long period-based grating sensors, fiber grating laser-based systems, and interferometric sensor systems based on grating reflectors.

Fiber grating sensors

A topical review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime. Results from numerical simulations are used to discuss the temporal and spectral characteristics of the supercontinuum, and to interpret the physics of the underlying spectral broadening processes. Particular attention is given to the case of supercontinuum generation seeded by femtosecond pulses in the anomalous group velocity dispersion regime of photonic crystal fiber, where the processes of soliton fission, stimulated Raman scattering, and dispersive wave generation are reviewed in detail. The corresponding intensity and phase stability properties of the supercontinuum spectra generated under different conditions are also discussed.

Supercontinuum generation in photonic crystal fiber

Two novel kinds of anti-resonant polygonal-core fibers are introduced, including a triangular-core fiber-design with surrounding silica-glass webs [1], and a negatively-curved square-core fiber-design.

Low-loss anti-resonant hollow fibers with polygonal cores

We have developed an analytical model to study pulse propagation in photonic crystal fibers filled by Raman-active gases. Solitons can show oscillations and tunneling inside the Raman-induced sinusoidal temporal potential in these fibers.

Raman-induced soliton oscillations and tunneling in gas-filled photonic crystal fibers

We report forward stimulated inter-polarization scattering mediated by torsional-radial acoustic resonances in photonic crystal fiber. Orthogonally-polarized co-propagating pump and Stokes waves undergo Stokes power conversion. We also develop analytical theory, which agrees with experimental results.

Forward stimulated inter-polarization scattering by torsional-radial acoustic resonances in PCF core

A Raman comb extending down to 140 nm in the vacuum UV is generated in hydrogen-filled hollow-core photonic crystal fiber pumped simultaneously by visible and UV pulses obtained from a compact 1030 run pump laser.

Narrowband VUV Light by Molecular Modulation in Dual-Pumped H 2 -Filled Hollow-Core Photonic Crystal Fiber

A novel dual-beam launching method allows controlled optical trapping and high-speed (9 cm/s) propulsion of microparticles in air-filled hollow-core PCF. Optical, viscous, and gravitational forces can be measured and the particle size determined.

Philip St. J. Russell

Papers

Low-loss anti-resonant hollow fibers with polygonal cores

Raman-induced soliton oscillations and tunneling in gas-filled photonic crystal fibers

Forward stimulated inter-polarization scattering by torsional-radial acoustic resonances in PCF core

Narrowband VUV Light by Molecular Modulation in Dual-Pumped H 2 -Filled Hollow-Core Photonic Crystal Fiber

Precise Optical Measurements of Particle Size in Air-Filled Hollow-Core Photonic Crystal Fiber