Influence of annealing on the linear and nonlinear optical properties of Mn doped ZnO thin films examined by z-scan technique in CW regime

Dual functionality of surface plasmon resonance and barrier layer on the photosensing and optical nonlinearity of ZnO nanorod arrays

“…37 It is reported that a peak-valley separation (Dx p-v ) more than 1.7 is the apparent validation of thermal nonlinearity. 37,48 The observed nonlinearity has a thermal origin due to energy storage from the laser diode. The difference between the normalized transmittance of the peak and valley (DT p-v ) in the CA measurement is related to n 2 by: 11 DT p-v = 0.406(1 À S) 0.25 n 2 kI 0 L eff (5) where S is the linear transmittance of the aperture (S { 1), Open aperture (OA) z-scan trace was carried out to determine the induced nonlinear absorption (NLA) coefficient b of the samples.…”

“…The sensitivity to NLR is entirely due to the aperture, and the absence of an aperture completely eliminates the self-defocusing effect. 37,38 Fig. 8 illustrates the CA z-scan results and the normalized transmittance (T N ) vs. x. x is a dimensionless variable and is defined as the ratio of the on-axis position (z) to the Rayleigh length z R = kw 0 2 /2.…”

Influence of yttrium doping on the nonlinear optical limiting properties of cadmium molybdate nanostructures

“…An ideal optical limiter should possess high linear transmittance, high stability, and a low limiting threshold. [48][49][50][51] Fig. 8 shows optical limiting traces for the pure and yttrium doped CdMoO 4 .…”

Thickness Effect on the Properties of 4% Mn‐Doped ZnO Thin Films Grown by Sol‐Gel Spin Coating Deposition

“…The effect of different parameters such as annealing temperature, substrate nature, Mn doping concentration on the physical properties of Mn-doped ZnO thin films using different physical and chemical methods of elaboration, such as pulsed laser deposition, [11][12][13] spray pyrolysis, [14,15] magnetron sputtering, [16,17] and sol-gel were widely studied. [18,19] However, very little research investigated the thickness effect of Mn-doped ZnO thin films that used rf magnetron sputtering method for preparation.…”