TY - JOUR
T1 - Detecting mid-infrared light by molecular frequency upconversion in dual-wavelength nanoantennas
AU - Xomalis, Angelos
AU - Zheng, Xuezhi
AU - Chikkaraddy, Rohit
AU - Koczor-Benda, Zsuzsanna
AU - Miele, Ermanno
AU - Rosta, Edina
AU - Vandenbosch, Guy A.E.
AU - Martínez, Alejandro
AU - Baumberg, Jeremy J.
N1 - Publisher Copyright:
© 2021 American Association for the Advancement of Science. All rights reserved.
PY - 2021/12/3
Y1 - 2021/12/3
N2 - Coherent interconversion of signals between optical and mechanical domains is enabled by optomechanical interactions. Extreme light-matter coupling produced by confining light to nanoscale mode volumes can then access single mid-infrared (MIR) photon sensitivity. Here, we used the infrared absorption and Raman activity of molecular vibrations in plasmonic nanocavities to demonstrate frequency upconversion. We converted approximately 10-micrometer-wavelength incoming light to visible light by surface-enhanced Raman scattering (SERS) in doubly resonant antennas that enhanced upconversion by more than 1010. We showed 140% amplification of the SERS anti-Stokes emission when an MIR pump was tuned to a molecular vibrational frequency, obtaining lowest detectable powers of 1 to 10 microwatts per square micrometer at room temperature. These results have potential for low-cost and large-scale infrared detectors and spectroscopic techniques.
AB - Coherent interconversion of signals between optical and mechanical domains is enabled by optomechanical interactions. Extreme light-matter coupling produced by confining light to nanoscale mode volumes can then access single mid-infrared (MIR) photon sensitivity. Here, we used the infrared absorption and Raman activity of molecular vibrations in plasmonic nanocavities to demonstrate frequency upconversion. We converted approximately 10-micrometer-wavelength incoming light to visible light by surface-enhanced Raman scattering (SERS) in doubly resonant antennas that enhanced upconversion by more than 1010. We showed 140% amplification of the SERS anti-Stokes emission when an MIR pump was tuned to a molecular vibrational frequency, obtaining lowest detectable powers of 1 to 10 microwatts per square micrometer at room temperature. These results have potential for low-cost and large-scale infrared detectors and spectroscopic techniques.
UR - http://www.scopus.com/inward/record.url?scp=85120678675&partnerID=8YFLogxK
UR - https://arxiv.org/abs/2107.02507
U2 - 10.1126/science.abk2593
DO - 10.1126/science.abk2593
M3 - Article
C2 - 34855505
AN - SCOPUS:85120678675
SN - 0036-8075
VL - 374
SP - 1268
EP - 1271
JO - Science
JF - Science
IS - 6572
ER -