78 citations · 154 across the 11 of their papers we have counts for
11 papers
Eliminating Thermal IR Background Noise by Imaging with Undetected Photons
Yue Ma, Nathan Gemmell, Emma Pearce +2
Spectroscopy and imaging in the mid-infrared (2.5 m 25 m) is bedevilled by the presence of a strong 300 K thermal background at room temperature that makes…
Enhanced nonlinear interferometry via seeding
Jefferson Flórez, Emma Pearce, Nathan R. Gemmell +5
We analyse a nonlinear interferometer, also known as an SU(1,1) interferometer, in the presence of internal losses and inefficient detectors. To overcome these limitations, we cons…
Loss compensated and enhanced mid-infrared interaction-free sensing with undetected photons
Nathan R. Gemmell, Jefferson Florez, Emma Pearce +4
Sensing with undetected photons enables the measurement of absorption and phase shifts at wavelengths different from those detected. Here, we experimentally map the balance and los…
Label-Free Chemical Nano-Imaging of Intracellular Drug Binding Sites
William S. Hart, Hemmel Amrania, Alice Beckley +7
Optical microscopy has a diffraction limited resolution of about 250 nm. Fluorescence methods (e.g. PALM, STORM, STED) beat this, but they are still limited to 10 s of nm, and the…
Mid-infrared Chemical Nano-imaging for Intra-cellular Drug Localisation
William S. Hart, Hemmel Amrania, Alice Beckley +7
In the past two decades a range of fluorescence cell microscopy techniques have been developed which can achieve ~10 nm spatial resolution, i.e. substantially beating the usual lim…
Wide-Band Nano-Imaging of Plasmon Dispersion and Hotspots in Quasi-Free-Standing Epitaxial Graphene
William S. Hart, Vishal Panchal, Christos Melios +3
We report observation of graphene plasmon interference fringes across a wide spectral range using a scattering scanning near-field optical microscope (s-SNOM) that employs a widely…