Open AccessTIGER: TIme‐Gated Electric field Reconstruction
Author(s) -
Billard Franck,
Sharma Rishabh,
Hertz Edouard,
Faucher Olivier,
Béjot Pierre
Publication year - 2022
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202200107
Subject(s) - optics , laser , signal (programming language) , pyramid (geometry) , frequency resolved optical gating , interferometry , electric field , physics , tiger , phase (matter) , pulse (music) , amplitude , computer science , ultrashort pulse , femtosecond pulse shaping , detector , algorithm , quantum mechanics , programming language
Herein, a novel self‐referenced method for the complete temporal characterization (phase and amplitude) of ultrashort optical laser pulses is presented. The technique, called TIme‐Gated Electric field Reconstruction (TIGER), measures a second‐order nonlinear signal (namely, second‐harmonic generation or two‐photon absorption) produced by four time‐delayed replicas of the input pulse. The delays are spatially encoded in the beam profile using a four‐faced pyramid‐like optical element. The presented technique enables single shot measurement and does not require any spectral measurements, in contrast with well‐known self‐referenced characterization methods. Depending on the chosen geometry, the recorded TIGER signal can be either interferometric (i.e., carrier frequency resolved) or intensimetric. This article describes the principle operation of the device together with a detailed theoretical analysis. TIGER measurements of various laser pulse shapes with their reconstructions are then presented, demonstrating the relevance of this original approach.