Accurate measurement of nanomechanical motion in a fiber-taper nano-optomechanical system

Abstract

The hybrid systems that couple optical and mechanical degrees of freedom in nanoscale devices offer an unprecedented opportunity and development in laboratories worldwide. A nano-optomechanical (NOM) system that converts energy directly/inversely between optics and mechanics opens an approach to control the behavior of light and light-driven mechanics. An accurate measurement of the mechanical motion of a fiber-taper NOM system is a critical challenge. In this work, an optical microscope was used to measure the nanoscale mechanical motion of the fiber taper by introducing white light interference. The resolution of mechanical motion monitoring achieved 0.356 nm with an optomechanical efficiency of >20 nm/lW. This paper describes an approach to characterize NOM transducers between optical and mechanical signals in both classical and quantum fields.

Novel Sensors of the Linear Displacement Measurement With High-Resolution for Mechatronics Applications

“…Recently, the exact measurement of motions on the nanometer scale, either directly or indirectly, involves many applications in technology [1,2]. Nano-positioners, the microfabrication industry, vibration isolation devices, calibration equipment, surface topography, and measurements of thin film are examples of the importance of measuring motions and displacements on the nanoscale.…”

Dual Optomechanical Cavities for All-Optical Actuation and Sensing of Mechanical Motion

“…Digital Object Identifier 10.1109/JPHOT.2022.3186408 consumption [7]. Cavity optomechanics has a wide range of potential applications, including tunable photonic filters [14] and wavelength routers [8], wavelength conversion [9] and switching [10], and radio-frequency optomechanical oscillators [11].…”

“…The interaction between optical cavities and mechanical resonators has been observed and investigated in order to learn more about those fundamental studies and applications of tunable photonics. In most existing optomechanical systems, however, only a single optical channel is used to launch and detect light coupled into and out of the optical cavity [14]. A fiber taper or integrated waveguide, for example, is evanescently connected with the optical cavity in some COM systems to activate cavity optomechanics and detect dynamical backaction.…”

A proposal for wide range wavelength switching process using optical force

“…Another issue that is a challenge in light-driven mechanics is the accurate measurement of displacement in nanometer scale, e.g. mechanical motion in fiber-taper NOM system [33]. in this way, Femto-newton sensing of the optical force on nanofiber is significant [34].…”