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VLIYaNIE KONTsENTRATsII NANOPLASTINOK CdSe V KOLLOIDNOM RASTVORE NA NELINEYNOE IZMENENIE POGLOShchENIYa

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PII
S0044451024030015-1
DOI
10.31857/S0044451024030015
Publication type
Article
Status
Published
Authors
G. A. Klimenko
  • Affiliation:
M. V. Kozlova
  • Affiliation:
Volume/ Edition
Volume 165 / Issue number 3
Pages
307-316
Abstract
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.
Keywords
Date of publication
26.07.2025
Number of purchasers
0
Views
46

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