Sub-hertz optomechanically induced transparency with a kilogram-scale mechanical oscillator
Name
PhysRevA.100.013853.pdf
Description
Published version
Size
923.83 KB
Format
Adobe PDF
Checksum (MD5)
5fac0219598f913a5d4bd5931e0d3918
Author(s)
Bodiya, T
Sudhir, V
Wipf, C
Smith, N
Buikema, A
Kontos, A
Yu, H
Mavalvala, N
Date Issued
2019
Journal
Physical Review A
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2019 American Physical Society. Optical interferometers with suspended mirrors are the archetype of all current audio-frequency gravitational-wave detectors. The radiation pressure interaction between the motion of the mirrors and the circulating optical field in such interferometers represents a pristine form of light-matter coupling, largely due to 30 years of effort in developing high-quality optical materials with low mechanical dissipation. However, in all current suspended interferometers, the radiation pressure interaction is too weak to be useful as a resource, and too strong to be neglected. Here, we demonstrate a meter-long interferometer with suspended mirrors, of effective mass 125g, where the radiation pressure interaction is enhanced by strong optical pumping to realize a cooperativity of 50. In conjunction with modest resolved-sideband operation, this regime is efficiently probed via optomechanically induced transparency of a weak on-resonant probe. The low resonant frequency and high-Q of the mechanical oscillator allows us to demonstrate transparency windows barely 100 mHz wide at room temperature. Together with a near-unity (≈99.9%) out-coupling efficiency, our system saturates the theoretical delay-bandwidth product, rendering it an optical buffer capable of seconds-long storage times.
MIT Department
Lincoln Laboratory
LIGO (Observatory : Massachusetts Institute of Technology)
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DOI of Published Version
10.1103/PHYSREVA.100.013853
https://doi.org/10.1103/PHYSREVA.100.013853
