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Influence of embedded NiO-nanoparticles on the nonlinear absorption of tungsten disulfide nanolayers
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- Konda, Srinivasa Rao (author)
- Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China.
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- Rajan, Rahul A. (author)
- Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China.;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
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- Singh, Subhash (author)
- Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China.;Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
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- Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, GPL Photon Lab, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China.;Univ Chinese Acad Sci, Beijing 100049, Peoples R China. (creator_code:org_t)
- Elsevier, 2023
- 2023
- English.
- In: Optical materials (Amsterdam). - : Elsevier. - 0925-3467 .- 1873-1252. ; 138
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 2D transition metal dichalcogenides possess fascinating properties due to their direct bandgap, strong spin-orbit coupling, and promising electronic/mechanical properties. In this work, we synthesized pure tungsten disulfide (WS2) nanolayers and NiO nanoparticles (NPs) decorated in few-layered WS2 and measured the third-order nonlinear optical properties using femtosecond Z-scan measurements. The open aperture Z-scan data illustrated that the inclusion of NiO nanoparticles into the WS2 layers increases the nonlinear absorption at 800 and 400 nm wavelengths. Furthermore, we observed the switchability of the nonlinear absorption from saturable absorption to two-photon absorption or reverse saturable absorption by changing the pump intensity. Thus, the embedded NiO NPs played a crucial role in the variation of intensity-dependent nonlinear absorption mechanism of WS2 nanolayers and thus can be helpful for various optical applications such as laser pulse compression and optical limiting to prevent over-exposure of protective photosensitive sensors by intense ultrashort laser pulses.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- NiO nanoparticles
- Nonlinear absorption
- Nonlinear refraction
- WS2
Publication and Content Type
- ref (subject category)
- art (subject category)
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