Nonlinear absorption of Ag2S, Ag2Se, PbS, and PbSe quantum dot-containing thick films

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-09-03 DOI:10.1016/j.optmat.2025.117478

R.A. Ganeev , S.V. Aslanov , A.I. Zvyagin , M.S. Smirnov , O.V. Ovchinnikov , V.V. Kim , Supriya Pradhan , Tuhina Parvin Sultana , Srinivasa Rao Konda , Venugopal Rao Soma

引用次数: 0

Abstract

The nonlinear absorption properties of silver sulfide, silver selenide, lead sulfide, and lead selenide quantum dot (QD) thick films (30 μm) were investigated using the 800 nm, 50 fs fs laser pulses. The influence of laser intensity on the nonlinear absorption coefficient on laser intensity was studied to understand the competition between saturable absorption, two-photon absorption, and reverse saturable absorption. The comparison of the films and colloidal solutions of the same QDs highlighted the influence of film structure and QD interactions on the third-order nonlinear optical parameters.

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含Ag2S， Ag2Se， PbS和PbSe量子点厚膜的非线性吸收

利用800 nm、50 fs激光脉冲研究了硫化银、硒化银、硫化铅和硒化铅量子点（QD）厚膜（30 μm）的非线性吸收特性。研究了激光强度对非线性吸收系数的影响，了解了饱和吸收、双光子吸收和反饱和吸收之间的竞争关系。通过对相同量子点的薄膜和胶体溶液的比较，突出了薄膜结构和量子点相互作用对三阶非线性光学参数的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.