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Пространственные и временные характеристики четырехволнового преобразователя излучения в параболическом волноводе с резонансной нелинейностью
Е.В. Воробьева 1, В.В. Ивахник 1, Д.Р. Капизов 1

1 Самарский национальный исследовательский университет имени академика С.П. Королёва,
443086, Россия, г. Самара, Московское шоссе, д. 34

 PDF, 804 kB

DOI: 10.18287/2412-6179-CO-1199

Страницы: 27-35.

Аннотация:
С использованием функции временного отклика, функции размытия точки проанализированы пространственные и временные характеристики вырожденного четырехволнового преобразователя в многомодовом волноводе с резонансной нелинейностью. Для четырехволнового преобразователя при условии одномодовых с равными номерами мод волнами накачки получены зависимости ширины временного отклика от номера моды объектной волны, интенсивности первой волны накачки, длины волновода. Показано, что наибольший вклад в амплитуду объектной волны обусловлен модой волновода, номер которой совпадает с номерами мод одномодовых волн накачки. Для стационарного режима учет пространственной структуры гауссовой волны накачки приводит с уменьшением ширины пучка накачки к монотонному уменьшению с последующим выходом на постоянное значение полуширины модуля функции размытия точки. При одномодовых волнах накачки с равными номерами мод с увеличением номера моды волн накачки наблюдается перераспределение энергии, сосредоточенной в побочных максимумах изображения точечного сигнала, улучшение качества обращения волнового фронта.

Ключевые слова:
четырехволновой преобразователь излучения, параболический волновод, резонансная нелинейность, функция размытия точки, временной отклик.

Благодарности
Xxxx.

Цитирование:
Воробьева, Е.В. Пространственные и временные характеристики четырехволнового преобразователя излучения в параболическом волноводе с резонансной нелинейностью / Е.В. Воробьева, В.В. Ивахник, Д.Р. Капизов // Компьютерная оптика. – 2023. – Т. 47, № 1. – С. 27-35. – DOI: 10.18287/2412-6179-CO-1199.

Citation:
Vorobeva EV, Ivakhnik VV, Kapizov DR. Spatial and time characteristics of a four-wave radiation converter in a parabolic waveguide with resonant nonlinearity. Computer Optics 2023; 47(1): 27-35. DOI: 10.18287/2412-6179-CO-1199.

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