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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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High order Brunel harmonics and supercontinuum formed by a weak optical pump in presence of a strong terahertz fieldтезисы доклада Тезисы
- Авторы: Babushkin I., Demircan A., Morgner U., Savel'ev A.
- Сборник: Book of Abstracts V International Conference on Ultrafast Optical Science UltrafastLight-2021 October 4 – 8, 2021 Lebedev Physical Institute, Moscow
- Тезисы
- Год издания: 2021
- Место издания: Moscow
- Первая страница: 127
- Аннотация: Brunel harmonics appear in the optical response of an atom in process of laser-induced ionization, when the electron leaves the atom and is accelerated in the strong optical field [1-3]. In contrast to recollision-based harmonics, the Brunel mechanism does not require the electron returning to the core. Here we show that in the presence of a strong terahertz (THz) eld, which is just below the boundary of an e ective tunnel ionization, even a weak driving eld at the optical frequencies allow for generating Brunel harmonics especially effectively. Importantly, the strong ionizing THz pump also suppresses recollisions, making the Brunel mechanism dominant in a wide spectral range. High-order Brunel harmonics may form a coherent carrier-envelope-phase insensitive supercontinuum, compressible into an isolated pulse with the duration down to 100 attoseconds.
- Добавил в систему: Савельев-Трофимов Андрей Борисович