Absorption of Ultrashort Laser Pulses by Diatomic Molecules
- Авторы: Astapenko V.A.1, Lisitsa V.S.1,2,3, Yakovets A.V.1
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Учреждения:
- Moscow Institute of Physics and Technology (State University)
- National Research Center “Kurchatov Institute”
- National Research Nuclear University MEPhI
- Выпуск: Том 127, № 6 (2018)
- Страницы: 1003-1008
- Раздел: Atoms, Molecules, Optics
- URL: https://journals.rcsi.science/1063-7761/article/view/193921
- DOI: https://doi.org/10.1134/S1063776118120026
- ID: 193921
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Аннотация
The absorption of ultrashort laser pulses by diatomic CO and HF molecules is studied theoretically. The probability of absorption in the total pulse action time and its dependence on the pulse duration and carrier frequency are calculated. In contrast to atomic systems, where the finite pulse duration effects are noticeable on time scales of the order of femtoseconds, these effects in molecular structures manifest themselves on time scales of the order of picoseconds. In this case, the vibrational–rotational structure of molecular transitions plays a significant role. The results of our calculations of the vibrational–rotational spectra for the absorption of ultrashort laser pulses by diatomic CO and HF molecules are presented. The transition from the nonlinear dependence of the absorption probability for short pulse durations to the standard dependence at long pulse durations corresponding to the transition probabilities per unit time is investigated.
Об авторах
V. Astapenko
Moscow Institute of Physics and Technology (State University)
Автор, ответственный за переписку.
Email: andrey.yakovets@gmail.com
Россия, Dolgoprudnyi, Moscow oblast, 141701
V. Lisitsa
Moscow Institute of Physics and Technology (State University); National Research Center “Kurchatov Institute”; National Research Nuclear University MEPhI
Email: andrey.yakovets@gmail.com
Россия, Dolgoprudnyi, Moscow oblast, 141701; pl. Kurchatova 1, Moscow, 123182; Kashirskoe sh. 31, Moscow, 115409
A. Yakovets
Moscow Institute of Physics and Technology (State University)
Email: andrey.yakovets@gmail.com
Россия, Dolgoprudnyi, Moscow oblast, 141701
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