Time-resolved nonlinear ghost imaging

Olivieri, Luana, Totero Gongora, Juan Sebastian, Pasquazi, Alessia and Peccianti, Marco (2018) Time-resolved nonlinear ghost imaging. ACS Photonics, 5 (8). pp. 3379-3388. ISSN 2330-4022

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Abstract

Terahertz (THz) spectroscopy systems are widely employed to retrieve the chemical and material composition of a sample. This is single-handed the most important driving motivation in the field and has largely contributed to shaping THz science as an independent subject. The limited availability of high-resolution imaging devices, however, still represents a major technological challenge in this promising field of research. In this theoretical work, we tackle this challenge by developing a novel nonlinear Ghost Imaging (GI) approach that conceptually outperforms established single-pixel imaging protocols at inaccessible wavelengths. Our methodology combines nonlinear THz generation with time-resolved field measurements, as enabled by state-of-the-art Time Domain Spectroscopy (TDS) techniques. As an ideal application target, we consider hyperspectral THz imaging of semi-transparent samples with nonnegligible delay contribution and we demonstrate how time-resolved, full-wave acquisition enables accurate spatiotemporal reconstruction of complex inhomogeneous samples.

Item Type: Article
Keywords: Terahertz, Ghost Imaging, Nonlinear Imaging, Terahertz Hyperspectral imaging, time-resolved ghost-imaging, subwavelength hyperspectral imaging
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics > QC0350 Optics. Light
Q Science > QC Physics > QC0350 Optics. Light > QC0395 Physical optics
Q Science > QC Physics > QC0350 Optics. Light > QC0395 Physical optics > QC0446.2 Nonlinear optics. Quantum optics
Q Science > QC Physics > QC0350 Optics. Light > QC0450 Spectroscopy
Q Science > QC Physics > QC0350 Optics. Light > QC0450 Spectroscopy > QC0454.T47 Terahertz spectroscopy
Depositing User: Juan Sebastian Totero Gongora
Date Deposited: 06 Jul 2018 11:46
Last Modified: 03 Jul 2019 01:00
URI: http://sro.sussex.ac.uk/id/eprint/76906

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