Optomechanical feedback cooling of a 5 mm long torsional mode

Published

November 30, 2023

Author(s)

Dianqiang Su, Yuan Jiang, Pablo Solano, Luis Orozco, John R. Lawall, Yanting Zhao

Abstract

We report three orders of magnitude optical cooling of the fundamental torsional mode of a 5 mm-long, 550 nm diameter optical nanofiber. The rotation of the nanofiber couples to the polarization of guided laser fields. We use a weak laser probe to monitor the rotation, and use feedback to modulate the polarization of an auxiliary drive laser providing torque. Our results present a tool for the optomechanical control of large-scale torsional resonators, with metrological applications and potential implications for studying macroscopic objects in quantum states.

Citation

Photonics Research

Volume

11

Issue

12

Pub Type

Journals

Download Paper

https://doi.org/10.1364/PRJ.487035

Local Download

Keywords

optomechanics, rotation, torsion, feedback cooling, nanofiber

Citation

Su, D. , Jiang, Y. , Solano, P. , Orozco, L. , Lawall, J. and Zhao, Y. (2023), Optomechanical feedback cooling of a 5 mm long torsional mode, Photonics Research, [online], https://doi.org/10.1364/PRJ.487035, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936247 (Accessed October 14, 2025)