3 papers
physics.optics2024★ 1 cited
Efficient short-wave infrared upconversion by self-sensitized holmium-doped nanoparticles
Rakesh Arul, Zhao Jiang, Xinjuan Li +5
Photon upconversion, combining several low-energy photons to generate one high-energy photon is of wide interest for biomedical, catalytic and photonic applications. Lanthanide-dop…
physics.optics2023
Raman-probing the local ultrastrong coupling of vibrational plasmon-polaritons on metallic gratings
Rakesh Arul, Kishan Menghrajani, Marie S. Rider +3
Strong coupling of molecular vibrations with light creates polariton states, enabling control over many optical and chemical properties. However, the near-field signatures of stron…
cond-mat.mes-hall2023
Anti-Stokes Photoluminescence in Monolayer WSe Activated by Plasmonic Cavities through Resonant Excitation of Dark Excitons
Niclas S. Mueller, Rakesh Arul, Ashley P. Saunders +9
Anti-Stokes photoluminescence (PL) is light emission at a higher photon energy than the excitation, with applications in optical cooling, bioimaging, lasing, and quantum optics. He…