Optical bistability in layered InSe crystal


Salmanov V., Huseynov A., Rzayev R., Rzayev U., Mammadov R., Aliyeva A.

International Journal of Modern Physics B, vol.37, no.18, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 18
  • Publication Date: 2023
  • Doi Number: 10.1142/s0217979223501758
  • Journal Name: International Journal of Modern Physics B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Keywords: Optical bistability, layered crystal, exciton, absorption, THERMOSTIMULATED LUMINESCENCE, SPECTROSCOPY, TEMPERATURE
  • Middle East Technical University Affiliated: Yes

Abstract

© 2023 World Scientific Publishing Company.In this study, we experimentally study the dependence of the intensity of laser radiation incident on and transmitted through a layered InSe crystal. A picosecond YAG:Nd3+ laser with a parametric light generator was used as a light source, making it possible to generate light pulses with a duration of ∼30 ps, tunable in frequency within the range of 0.75-1.5μm. Optical bistability in the region of exciton resonance was detected in an InSe crystal at room-temperature under the picosecond YAG:Nd laser. It is shown that the decrease in absorption in the exciton resonance region is associated with the process of exciton-exciton interaction, shielding of excitons, and the Mott transition.