|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Frequency conversion in aperiodic quasi-phase-matched structuresстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 ноября 2012 г.
- Автор: Kitaeva G.Kh
- Журнал: Physical Review A - Atomic, Molecular, and Optical Physics
- Том: 76
- Номер: 4
- Год издания: 2007
- Издательство: American Physical Society
- Местоположение издательства: United States
- DOI: 10.1103/PhysRevA.76.043841
- Аннотация: The influence of disordering of one-dimensional quasi-phase-matched structures in nonlinear-optical crystals on the spectral characteristics of parametric processes is studied in the general form, taking into consideration arbitrary spatial distribution of the second-order susceptibility, sum- and difference-frequency interactions in the forward and backward directions, and continuous-wave and pulsed pumping. It is shown that, at the initial low-gain stages of all processes, the impact of the medium spatial structure can be described in terms of a single functional parameter, nonlinear transfer function (T-function). Expressed in terms of dimensionless phase mismatches, the T-function is considered as a universal characteristic of the structured medium. The method of its direct measurement is proposed, based on spontaneous parametric down-conversion. Examples of the T-function approach are demonstrated for short-pulse second harmonic generation, as well as for generation and detection of spectral-shaped terahertz signals.
- Добавил в систему: Китаева Галия Хасановна