Investigation on synthesis, growth, Hirshfeld surface and third order nonlinear optical properties of Urea-Succinic Acid single crystal: A potential candidate for self-defocusing lasing application

A novel stilbazolium derivative crystals of 4-[2-(4-dimethyl amino-phenyl)-vinyl]-1-methyl-pyridinium+ bromide− (DMSB) single crystal: exploration of the growth, molecular structure, linear optical, and third order nonlinear properties

“…The results from SCXRD studies conrmed that the grown DMSB belonged to the centrosymmetric space group P2 1 /c. The centrosymmetric pattern in the crystal species the presence of inversion symmetry in the structure, which implied the presence of the (c (3) ) effect and the absence of the (c (2) ) effect. The sign and magnitude of the nonlinear refractive index (n 2 ) of the title compound were ascertained by using the closed aperture (CA) mode.…”

“…There are four basic parameters that can be directly deduced from the Z-scan experiment, namely; third-order nonlinear susceptibility (c (3) ), second-order hyperpolarizability (g), nonlinear refractive index (n 2 ) and nonlinear absorption coef-cient (b). 48 In this method, a computerized translation setup was used to move the sample from −Z to +Z along the focussed Gaussian beam's propagation axis (Z-axis).…”

“…The resulting nonlinear refractive index (n 2 ) and effective nonlinear absorption coefficient (b) were used to compute the real and imaginary components of third-order nonlinear susceptibility. Using the real and imaginary values, the absolute value of third-order nonlinear optical susceptibility (c (3) ) can be calculated by using the following expressions, Re c ð3Þ ðesuÞ ¼…”

“…Recently, nonlinear optical (NLO) materials that are capable of converting frequency are of great interest to a lot of researchers across the globe owing to their applications, such as optical memories, optical switches, optical modulation, laser sensing, image processing, photonic devices, telecommunication, and frequency conversion. [1][2][3][4] Therefore, new nonlinear optical materials are required to satisfy the day-to-day technical requirements. 5 Numerous efforts have been made in the past to create a novel organic material having signicant nonlinear properties.…”

Revealing photoluminescence and nonlinear optical absorption characteristics of PbMo0.75W0.25O4 single crystal for optical limiting applications

“…The well-known NA mechanisms are one-photon absorption (OPA), two-photon absorption (TPA), free-carrier absorption (FCA), and reverse saturable absorption (RSA). The NA feature offers materials in various usage areas such as optical switching [33], optical waveguide devices [41], ultrafast fiber lasers [42], self-defocusing lasing [43], self-frequency-doubling [44], and optical limiting [45,46] applications.…”