@inproceedings{eb42f3270fc04ffc9f64bae05f67f528,
title = "Noncollinear single-shot detection of terahertz waves",
abstract = "We demonstrate a single-shot temporal imaging technique for terahertz (THz) waves based on spatially resolved nonlinear frequency mixing. By employing sum or difference frequency generation (SFG or DFG) in a non-collinear geometry, our method maps the temporal evolution of a THz field into a spatially encoded near-infrared (NIR) signal. The angular separation of the generated NIR photons, governed by phase-matching conditions, enables the time-dependent THz waveform to be mapped directly onto a camera without the need for mechanical time-delay scanning. It provides real-time, high-resolution access to ultrafast THz dynamics in single-shot interactions, operating at the laser repetition rate and limited only by the acquisition speed of the line-scan camera. These results pave the way for advanced THz diagnostics in experimental setups where scanning is impractical or real-time access is mandatory.",
keywords = "Broadband spectroscopy, Frequency-domain, Non-collinear parametric detection, Terahertz imaging, Time-domain, Ultrafast",
author = "Nkeck, \{J. E.\} and G. Gandubert and S. Mine and J. Lafreni{\`e}re-Greig and X. Ropagnol and K. Murate and F. Blanchard",
note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; 11th Real-time Measurements, Rogue Phenomena, and Single-Shot Applications ; Conference date: 20-01-2026 Through 20-01-2026",
year = "2026",
month = mar,
day = "5",
doi = "10.1117/12.3085018",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Solli, \{Daniel R.\} and Georg Herink and Serge Bielawski",
booktitle = "Real-time Measurements, Rogue Phenomena, and Single-Shot Applications XI",
}