Nonlinear Absorption of the Films Containing Ag <sub>2</sub> S, Ag <sub>2</sub> Se, PbS, and PbSe Quantum Dots Using 1030nm and 515nm Pulses
The saturable absorption and two-photon absorption (TPA) of the thin films containing the quantum dots (QD) of several metal sulfides and selenides (Ag 2 S, PbS, Ag 2 Se, and PbSe) are studied using the 1,030[Formula: see text]nm and 515[Formula: see text]nm, 200 fs probe pulses. The prevailing role of saturable absorption and TPA in films was determined by varying the intensity of the probe pulses. The nonlinear optical parameters of the above processes are calculated. The strong TPA in PbS and PbSe QD films in the case of the 515[Formula: see text]nm probe pulses is revealed. The growth of the nonlinear absorption in the QD films compared to the colloids containing similar species is attributed to the growing influence of the local field introduced by QDs in the films. The potential applications of the studied QD films are discussed.
Authors
- S. V. Aslanov (ORCID: https://orcid.org/0000-0002-3961-2480)
- Vyacheslav V. Kim (ORCID: https://orcid.org/0000-0001-5996-2296)
- A. I. Zvyagin
- B. Eshchanov (ORCID: https://orcid.org/0000-0002-1869-4974)
- Sh. R. Kamalov (ORCID: https://orcid.org/0000-0003-2970-8865)
- O. V. Ovchinnikov (ORCID: https://orcid.org/0000-0001-6032-9295)
- M. S. Smirnov (ORCID: https://orcid.org/0000-0001-8765-0986)
- R. A. Ganeev (ORCID: https://orcid.org/0000-0001-5522-1802)
- Y. A. Buriyev
- A. A. Isroilov
Institutions
- Academy of Sciences Republic of Uzbekistan (UZ)
- Western Caspian University (AZ)
- Institute of Ion Plasma Laser Technologies (UZ)
- National Pedagogical University of Uzbekistan named after Nizami (UZ)
- Voronezh State University (RU)
Publication Details
- Journal
- Journal of Nonlinear Optical Physics & Materials
- Published
- 2025-11-28
- DOI
- https://doi.org/10.1142/s0218863525500559
- Primary Topic
- Nonlinear Optical Materials Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00