Saturable absorption properties of MoSe2 films synthesized by solid phase reaction

Dechong Li; Shengan Hu; Jing Wang; Weigang Shan; Wenjing Tang; Kai Jiang; Wei Xia

doi:10.1117/12.3014242

29 December 2023 Saturable absorption properties of MoSe₂ films synthesized by solid phase reaction

Dechong Li, Shengan Hu, Jing Wang, Weigang Shan, Wenjing Tang, Kai Jiang, Wei Xia

Proceedings Volume 12975, 6th Optics Young Scientist Summit (OYSS 2023); 1297503 (2023) https://doi.org/10.1117/12.3014242
Event: 6th Optics Young Scientist Summit, 2023, Changsha, China

Abstract

MoSe₂ thin films have excellent catalytic, electrical, and optical properties and have potential applications in the fields of catalytic hydrogen precipitation, field effect transistors, sensor devices, and optoelectronic devices. In this paper, MoSe₂ thin films were synthesized based on the solid-phase reaction at the interface between Se and Mo film at high temperatures, which are deposited on sapphire substrates sequentially. The structure and morphology were characterized by Raman spectroscopy, scanning electron microscopy and atomic force microscopy. The synthesis temperature and saturable absorption (SA) properties of the MoSe₂ films were investigated. The results show that 400°C is close to the optimal temperature for synthesizing MoSe₂ films, and the synthesized MoSe₂ films exhibit multilayer structure. When it is applied as a saturable absorber in a 1064 nm solid-state laser, the maximum repetition frequency of the Q-modulated laser pulse is obtained to be 428.1kHz, which corresponds to a pulse width of 67.6 ns and a maximum modulation depth of 27.4%.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Dechong Li, Shengan Hu, Jing Wang, Weigang Shan, Wenjing Tang, Kai Jiang, and Wei Xia "Saturable absorption properties of MoSe₂ films synthesized by solid phase reaction", Proc. SPIE 12975, 6th Optics Young Scientist Summit (OYSS 2023), 1297503 (29 December 2023); https://doi.org/10.1117/12.3014242

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