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9 September 2019 Precision sensing and opto-mechanics with optically levitated nanoparticles (Conference Presentation)
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Abstract
In high vacuum, optically-levitated dielectric nanospheres achieve excellent decoupling from their environment, making them ideal for precision force sensing. We have shown that 300 nm silica spheres can be used for calibrated zeptonewton force measurements in a standing-wave optical trap. The sensitivity achieved exceeds that of any conventional room-temperature solid-state force sensor by over an order of magnitude, and enables a variety of applications including electric field sensing, inertial sensing, and gravimetry. I will describe our progress towards using these sensors for tests of the Newtonian gravitational inverse square law at micron length scales. Optically levitated dielectric objects also show promise for a variety of other applications, including searches for gravitational waves, and experiments in quantum optomechanics.
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© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew Geraci "Precision sensing and opto-mechanics with optically levitated nanoparticles (Conference Presentation)", Proc. SPIE 11083, Optical Trapping and Optical Micromanipulation XVI, 110830S (9 September 2019); https://doi.org/10.1117/12.2529792
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