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2 October 2024 Combining intense terahertz pulses generation with broadband and real-time parametric detection
J. E. Nkeck, S. Mine, K. Murate, F. Blanchard
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Proceedings Volume PC13141, Terahertz Emitters, Receivers, and Applications XV; PC131410E (2024) https://doi.org/10.1117/12.3029313
Event: Optical Engineering + Applications, 2024, San Diego, California, United States
Abstract
Non-linear optical phenomena, such as parametric detection and amplification, manifest themselves in materials such as lithium niobate (LN) under the influence of a powerful optical pump beam. These processes have facilitated the practical realization of femtosecond (fs) pulse sources in the visible (VIS) and near infrared (NIR) spectra. They are also central to quantum detection, promising extremely sensitive detection of low-energy photons, particularly in the terahertz (THz) frequency range. To explore this innovative detection approach, we used an intense and powerful THz source taking advantage of optical rectification in lithium niobate (LN) crystals with an inclined-pulse front-end pumping configuration. By taking advantage of the high brightness of this source, we can acquire NIR signals in real time by upconversion and broadband using a standard CCD camera. In this presentation, we will look at the technical intricacies of the source and detection methodologies, as well as our goal of achieving single THz photon detection capability in the near future, all in the context of using ytterbium lasers.
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J. E. Nkeck, S. Mine, K. Murate, and F. Blanchard "Combining intense terahertz pulses generation with broadband and real-time parametric detection", Proc. SPIE PC13141, Terahertz Emitters, Receivers, and Applications XV, PC131410E (2 October 2024); https://doi.org/10.1117/12.3029313
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KEYWORDS
Quantum detection
Terahertz radiation
Near infrared
Femtosecond phenomena
Photons
Mirrors
Pulse signals
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