Abstract-Multi-dimensional Imaging in the Terahertz Regime for Theranostic Applications

Holger Breitenborn, Rafik Naccache, Anna Mazhorova, Matteo Clerici, Riccardo Piccoli, Larousse K. Khorashad, Alexander O. Govorov, Luca Razzari, Fiorenzo Vetrone, and Roberto Morandotti

https://www.osapublishing.org/abstract.cfm?uri=cleo_at-2017-ATu3A.6&origin=search

We demonstrate a novel terahertz radiation-based joint thermal-hyperspectral imaging method for theranostic applications. Hyperspectral imaging of a drug formulation was realized in the stratum granulosum of skin, in the presence of plasmonically heated gold nanoparticles.

Abstract-Sub-wavelength terahertz beam profiling of a THz source via an all-optical knife-edge technique

Sze Phing Ho, Anna Mazhorova, Mostafa Shalaby, Marco Peccianti, Matteo Clerici, Alessia Pasquazi, Yavuz Ozturk, Jalil Ali, Roberto Morandotti
http://arxiv.org/abs/1502.03873

We propose an all-optical Knife Edge characterization technique and we demonstrate its working principle by characterizing the sub-{\lambda} features of a spatially modulated Terahertz source directly on the nonlinear crystal employed for the Terahertz generation.

Subjects:	Optics (physics.optics)
Cite as:	arXiv:1502.03873 [physics.optics]
	(or arXiv:1502.03873v1 [physics.optics] for this version)

Abstract-Wavelength Scaling of Terahertz Generation by Gas Ionization

Matteo Clerici^1,2,*, Marco Peccianti^3,1, Bruno E. Schmidt¹, Lucia Caspani¹, Mostafa Shalaby¹, Mathieu Giguère¹,Antonio Lotti^4,5, Arnaud Couairon⁵, François Légaré¹, Tsuneyuki Ozaki¹, Daniele Faccio^2,†, and Roberto Morandotti^1 
1INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada
²School of Engineering and Physical Sciences, Heriot-Watt University, SUPA, Edinburgh EH14 4AS, United Kingdom
³Institute for Complex Systems (ISC), CNR, via dei Taurini 19, 00185 Rome, Italy
⁴Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, via Valleggio 11, 22100 Como, Italy
⁵Centre de Physique Théorique CNRS, École Polytechnique, F-91128 Palaiseau, France
http://prl.aps.org/abstract/PRL/v110/i25/e253901

Low-frequency currents induced by ultrashort laser-driven ionization can emit extremely broadband, single-cycle terahertz pulses. We present a model that predicts a strong wavelength dependence of the THz emission in good agreement with our experimental study. This reveals that the combined effects of plasma currents rising proportionally to the square of the pump wavelength and wavelength-dependent focusing conditions lead to 30 times higher THz emission at 1800 nm compared to an 800 nm wavelength. Unrivaled single-cycle electric field strengths of 4.4  MV/cm are achieved with this compact table-top setup.

© 2013 American Physical Society

Abstract-Nonlinear imaging and 3D-mapping of terahertz fields with Kerr media

http://arxiv.org/abs/1303.5886

Matteo Clerici, Daniele Faccio, Lucia Caspani, Marco Peccianti, Eleonora Rubino, Luca Razzari, François Légaré, Tsuneyuki Ozaki, Roberto Morandotti

(Submitted on 23 Mar 2013)

 We investigate the spatially and temporally resolved four-wave mixing of terahertz fields and optical pulses in large band-gap dielectrics, such as diamond. We show that it is possible to perform beam profiling and space-time resolved mapping of terahertz fields with sub-wavelength THz resolution by encoding the spatial information into an optical signal, which can then be recorded by a standard CCD camera.