7 papers · 1 filter
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…
Correlation Revival Eigenmodes for Differential Sensitivity in Speckle Metrology
Hal Gee, Morgan Facchin, Graham D. Bruce
Speckle metrology exploits the high sensitivity of scattered fields to parameters of interest, yet this also leaves measurements vulnerable to unintended perturbations. Here we emp…
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.…
Performance limit of on-chip speckle spectrometers
Bhupesh Kumar, Graham D. Bruce, Luca Dal Negro +1
Disorder-driven, integrated speckle spectrometers offer exceptional spectral resolution within a compact design. They benefit from enhanced optical path lengths due to multiple lig…
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…