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Continuous-wave frequency upconversion with a molecular optomechanical nanocavity.
- Source :
-
Science (New York, N.Y.) [Science] 2021 Dec 03; Vol. 374 (6572), pp. 1264-1267. Date of Electronic Publication: 2021 Dec 02. - Publication Year :
- 2021
-
Abstract
- Coherent upconversion of terahertz and mid-infrared signals into visible light opens new horizons for spectroscopy, imaging, and sensing but represents a challenge for conventional nonlinear optics. Here, we used a plasmonic nanocavity hosting a few hundred molecules to demonstrate optomechanical transduction of submicrowatt continuous-wave signals from the mid-infrared (32 terahertz) onto the visible domain at ambient conditions. The incoming field resonantly drives a collective molecular vibration, which imprints a coherent modulation on a visible pump laser and results in upconverted Raman sidebands with subnatural linewidth. Our dual-band nanocavity offers an estimated 13 orders of magnitude enhancement in upconversion efficiency per molecule. Our results demonstrate that molecular cavity optomechanics is a flexible paradigm for frequency conversion leveraging tailorable molecular and plasmonic properties.
Details
- Language :
- English
- ISSN :
- 1095-9203
- Volume :
- 374
- Issue :
- 6572
- Database :
- MEDLINE
- Journal :
- Science (New York, N.Y.)
- Publication Type :
- Academic Journal
- Accession number :
- 34855500
- Full Text :
- https://doi.org/10.1126/science.abk3106