16 citations · 24 across the 14 of their papers we have counts for
14 papers
Enhancing Speckle Metrology with Diffusion Denoising in Photon-Starved Regimes
Admir Bajraktarevic, Alexander C. Trowbridge, Saba N. Khan +3
Laser speckle is a powerful tool for precision metrology that enables highly sensitive measurements of light sources and subtle environmental perturbations. Many applications requi…
Volumetric nanoscale localization using engineered point spread functions in light sheet microscopy
R. E. Bautista Gonzalez, R. Mouthaan, A. Upadhya +3
Nanoscale three-dimensional localization across large biological volumes remains an outstanding challenge in optical microscopy, with existing approaches typically limited by imagi…
Ultra-high precision speckle spectrometer enabling radio-frequency scale resolution of atomic spectra
Gabriel Britto Monteiro, Christopher Perrella, Sarah K. Scholten +4
Laser speckle, the granular intensity pattern arising from random optical interference, provides a high-dimensional encoding of spectral information that can be exploited for preci…
Through-bottle spectroscopy as a tool for quality control and anti-counterfeiting of Brandy and Cognac
George O. Dwapanyin, Edward I. Appleton, Stella Corsetti +4
Counterfeiting of premium spirits poses significant economic and health risks, that could be tackled by robust, accurate, portable and non-destructive through-bottle measurements.…
Through the bottle authentication of red wine using near-IR fluorescence spectroscopy
Ané Kritzinger, Ralf Mouthaan, Graham D. Bruce +2
A major unaddressed challenge for food science remains the accurate characterisation of contents in sealed containers with a non-invasive method. This issue is particularly pressin…
Superconducting Nanowire Single-Photon Detectors for Enhanced Biomedical Imaging
Emi Cora Valmai Hughes, Avinash Upadhya, Kishan Dholakia
Significance: Superconducting nanowire single-photon detectors (SNSPDs; also known as SSPDs) show enormous promise for low-light biomedical imaging by offering exceptional sensitiv…
Non-invasive optical quantification of methanol in bottled spirits
Ané Kritzinger, George O. Dwapanyin, Ralf Mouthaan +2
Food and beverage contamination poses a persistent global threat. A prime example is the presence of methanol in counterfeit or illicit spirits, causing severe and often fatal pois…
Sensing with Twisted Light: Precision Measurement of Fractional Azimuthal Index to Determine Refractive Index
Christopher Perrella, Aman Anil Punse, Anastasiia Zalogina +6
Light beams possessing orbital angular momentum (OAM) have gained significant interest in areas such as optical manipulation, quantum entanglement, and super-resolved imaging. In i…
The Radiation Pressure of Light: historical perspectives and the role of structured light
Alexander C. Trowbridge, Ewan M. Wright, Kishan Dholakia
Light, or electromagnetic radiation, is well known to possess momentum, and the exchange of this momentum with a reflecting surface leads to radiation pressure. More often than not…
A neuromorphic camera for tracking passive and active matter with lower data throughput
Gabriel Britto Monteiro, Megan Lim, Tiffany Cheow Yuen Tan +8
We demonstrate the merits of using a neuromorphic, or event-based camera (EBC), for tracking of both passive and active matter. For passive matter, we tracked the Brownian motion o…
Optimising image capture for low-light widefield quantitative fluorescence microscopy
Zane Peterkovic, Avinash Upadhya, Christopher Perrella +5
Low-light optical imaging refers to the use of cameras to capture images with minimal photon flux. This area has broad application to diverse fields, including optical microscopy f…
Optical Manipulation of Whispering Gallery Mode Microlasers for Precision Controlled Cellular Delivery
Soraya Caixeiro, Paloma Rodríguez-Sevilla, Kishan Dholakia +1
Whispering gallery mode microlasers are known for their high Q-factors, characteristic emission spectra and sensitivity to local refractive index changes. This sensitivity combined…
Determining intrinsic sensitivity and the role of multiple scattering in speckle metrology
Morgan Facchin, Saba N. Khan, Kishan Dholakia +1
Speckle patterns are a powerful tool for high-precision metrology, as they allow remarkable performance in relatively simple setups. Nonetheless, researchers in this field follow r…
Learning algorithms for identification of whisky using portable Raman spectroscopy
Kwang Jun Lee, Alexander C. Trowbridge, Graham D. Bruce +4
Reliable identification of high-value products such as whisky is an increasingly important area, as issues such as brand substitution (i.e. fraudulent products) and quality control…