Efficient X-ray Generation in the Field of Femtosecond Tandem Fiber Laser Pulses with Low Energy and High Repetition Rate: The Role of Nonlinear Processes of the Interaction with a Target

Bravy, B.G.; Gordienko, V.M.

Авторы: Bravy B.G., Gordienko V.M.
Журнал: Physics of Wave Phenomena
Том: 33
Номер: 1
Год издания: 2025
Издательство: Allerton Press Inc.
Местоположение издательства: United States
Первая страница: 1
Последняя страница: 8
DOI: 10.3103/S1541308X2470047X
Аннотация: The role of the nonlinear processes of interaction of low-energy tightly focused (numerical aperture NA= 0.2) femtosecond pulses, generated by a fiber laser with a repetition rate (0.1–1 MHz), with a solid target placed in air has been analyzed for the first time. It is shown that the effect of generated laser pulses leads to the formation of a low-density zone in the focal surface region, thus minimizing the laser beam self-defocusing when depositing energy to the target and, as a consequence, increasing the radiation intensity as a result of the decrease in the focal spot size to the diffraction limit. A mechanism is proposed, which also makes it possible to increase significantly the X-ray yield upon interaction of intense tandem femtosecond laser pulses with the laser-induced dense surface plasma formed by the tandem prepulse. It is shown that the conditions necessary for reaching a yield of ~8-keV X-ray photons higher than 10^10 photons/s can be implemented using a copper target; these characteristics are urgent for designing an efficient microfocus tabletop X-ray source of new generation.
Добавил в систему: Гордиенко Вячеслав Михайлович

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Efficient X-ray Generation in the Field of Femtosecond Tandem Fiber Laser Pulses with Low Energy and High Repetition Rate: The Role of Nonlinear Processes of the Interaction with a Targetстатья

Прикрепленные файлы