2PA induced optical limiting behaviour of metal (Ni, Cu, Zn) niobate decorated reduced graphene oxide

Demonstration of Enhanced Saturable Absorption in Upconverter Integrated MoS2 Heterostructure Thin Film Using Nanopulsed Green Laser

“…[11] Saturable absorption (SA) is a property of the material, where the absorption of light decreases when the intensity of the light increases. [12,13] These saturable absorber materials have the ability to partially reflect and transmit photons, i.e., it transmits at high intensity photons and reflects at low intensity and thus serves as a mirror in lasers cavity to generate laser pulses. [14] In the search of efficient saturable absorbers, transition-metal dichalcogenides (TMDCs) like MoS 2 has a remarkable NLO property such as strong NLOabsorption property, giant modulation depth, and large nonlinear refractivity.…”

Synthesis, band gap structure and third order non-linear optical properties of zinc tungsten oxide nanocomposite using a single CW laser beam

“…The effects of dopants on the change in size of NPs, lattice structure and energy gap and consequently the nonlinear optical properties have been proven (Babeela et al, 2019). Also, the effects of surface agents on defect states and morphology can change the amount and even the mechanism type of non-linear response (Sabari Girisun et al, 2018;Monisha et al, 2020). Nonlinear optical responses can be tunable and varies with change of beam wavelengths.…”

Optical limiting performances of transitional metal dichalcogenides MX2 (M = V, Nb, Ta; X = S, Se) with ultralow initial threshold and optical limiting threshold

“…The VB group TMDs (VS 2 , VSe 2 , NbS 2 , NbSe 2 , TaS 2 , and TaSe 2 ) were synthesized via solid state sintering followed by liquid phase exfoliation (LPE) to obtain the corresponding nanosheets with the thickness less than 3 nm and lateral size over 1000 nm. All of investigated TMDs nanosheets displayed satisfying optical limiting responses with relatively low optical limiting onsets (F S ) and even lower optical limiting thresholds (F OL ) than the multi-wall carbon nanotubes (MWNTs) and C 60 [18][19][20] , among which, the VSe 2 nanosheets showed the best optical limiting performances with the ultralow F S value of 0.05 J=cm 2 , low F OL value of 0.9 J=cm 2 , and normalized transmittance of 0.30 at 1.28 GW=cm 2 . This work shows the potential of TMDs beyond MoS 2 in the optical limiting field.…”