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8 June 2023 Generation of intense THz pulses using laser-plasma interactions (Conference Presentation)
Hyyong Suk, Keekon Kang, Kyungmin Roh, Seongjin Jeon, Hyojeong Lee
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Proceedings Volume PC12579, Laser Acceleration of Electrons, Protons, and Ions VII; PC1257902 (2023) https://doi.org/10.1117/12.2666517
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
Abstract
THz (terahertz) waves have a wide range of important applications in science and technology, but solid-state-based generation of intense THz waves is quite limited. One of methods for generation of intense THz pulses is using a fs laser and plasma. In fact, a strong THz pulse can be generated by focusing an intense fs laser pulse in gas. In our laboratory, we produced intense THz pulses using several methods with a single laser pulse or two laser pulses of different wavelengths. The generated THz pulse forms were diagnosed by THz-TDS (THz time-domain-spectroscopy) and/or a spectral-encoding-based single-shot method. Furthermore, we used the broadband THz pulses for plasma diagnostics. In this experiment, the THz pulses were sent through an inductively-coupled plasma and the transmitted THz wave pulses were analyzed for phase shift. In this way, we obtained the plasma density information successfully, which can be applied for a wide range of plasma density diagnostics. In this talk, those details for laser-plasma-based THz wave generation and applications will be presented.
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Hyyong Suk, Keekon Kang, Kyungmin Roh, Seongjin Jeon, and Hyojeong Lee "Generation of intense THz pulses using laser-plasma interactions (Conference Presentation)", Proc. SPIE PC12579, Laser Acceleration of Electrons, Protons, and Ions VII, PC1257902 (8 June 2023); https://doi.org/10.1117/12.2666517
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KEYWORDS
Terahertz radiation
Plasma
Femtosecond phenomena
Plasma diagnostics
Pulsed laser operation
Diagnostics
Gas lasers
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