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Time-resolved nonlinear ghost imaging: route to hyperspectral single-pixel reconstruction of complex samples at THz frequencies
conference contribution
posted on 2023-06-09, 21:23 authored by Luana OlivieriLuana Olivieri, Juan Sebastian Totero Gongora, Alessia Pasquazi, Marco PecciantiTerahertz (THz) is an innovative form of electromagnetic radiation providing unique spectroscopy capabilities in critical fields, ranging from biology to material science and security. The limited availability of high-resolution imaging devices, however, constitutes a major limitation in this field. In this work, we tackle this challenge by proposing an innovative type of time-space nonlinear Ghost-Imaging (GI) methodology that conceptually outperforms established single-pixel imaging protocols. Our methodology combines nonlinear pattern generation with time-resolved single-pixel measurements, as enabled by the state-of-the-art Time-Domain Spectroscopy (TDS) technique. This approach is potentially applicable to any wave-domain in which the field is a measurable quantity. The full knowledge of the temporal evolution of the transmitted field enables devising a new form of full-wave reconstruction process. This gives access not only to the morphological features of the sample with deeply subwavelength resolution but also to its local spectrum (hyperspectral imaging). As a target application, we consider hyperspectral THz imaging of a disordered inhomogeneous sample.
Funding
TIMING: Time-Resolved Nonlinear Ghost Imaging; G2016; EUROPEAN UNION; 725046
History
Publication status
- Published
File Version
- Published version
Journal
Nonlinear Frequency Generation and Conversion: Materials and Devices XVIIIISSN
0277-786XPublisher
SPIEExternal DOI
Volume
10902Page range
142-148Event name
SPIE Photonics West 2019Event location
San Francisco, California, United StatesEvent type
conferenceEvent date
2nd-7th February 2019ISBN
9781510624467Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Atomic, Molecular and Optical Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2020-07-15First Open Access (FOA) Date
2020-07-16First Compliant Deposit (FCD) Date
2020-07-14Usage metrics
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