3 papers
physics.optics2025
Open-Path Methane Sensing via Backscattered Light in a Nonlinear Interferometer
Jinghan Dong, Weijie Nie, Arthur C. Cardoso +4
Nonlinear interferometry has widespread applications in sensing, spectroscopy, and imaging. However, most implementations require highly reflective mirrors and precise optical alig…
physics.optics2024
Methane Sensing via Unbalanced Nonlinear Interferometry using a CMOS Camera
Jinghan Dong, Arthur C. Cardoso, Haichen Zhou +4
Here we present a high-sensitivity, rapid, and low-cost method for methane sensing based on a nonlinear interferometer. This method utilizes signal photons generated by stimulated…
quant-ph2024
Methane sensing in the mid-IR using short wave IR photon counting detectors via non-linear interferometry
Arthur C. Cardoso, Jinghan Dong, Haichen Zhou +2
We demonstrate a novel MIR methane sensor shifting measurement wavelength to SWIR (1.55m) by using non-linear interferometry. The technique exploits the interference effects se…