- Код статьи
- 10.31857/S0044451024030015-1
- DOI
- 10.31857/S0044451024030015
- Тип публикации
- Статья
- Статус публикации
- Опубликовано
- Авторы
- Том/ Выпуск
- Том 165 / Номер выпуска 3
- Страницы
- 307-316
- Аннотация
- Экспериментально исследованы особенности нелинейного поглощения коллоидных растворов нанопластинок CdSe толщиной 2.5 и 3.5 монослоя в зависимости от концентрации в случае их резонансного стационарного возбуждения наносекундными лазерными импульсами. Обнаружен рост амплитуды дифференциального пропускания и интенсивности насыщения поглощения на длинах волн экситонных переходов, связанных с тяжелыми дырками, для двух серий образцов при увеличении концентрации нанопластинок в коллоидном растворе, что объяснено процессом заполнения фазового пространства экситонов. Для коллоидных растворов нанопластинок высокой концентрации выявлена область отрицательных значений дифференциального пропускания при достаточно высокой интенсивности накачки и объяснена переходом от режима насыщения поглощения к режиму оптического усиления.
- Ключевые слова
- Дата публикации
- 15.03.2024
- Год выхода
- 2024
- Всего подписок
- 0
- Всего просмотров
- 107
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