Characterizing optical and morphological properties of Eriochrome Black T doped polyvinyl alcohol film

Abstract

Eriochrome Black T doped polyvinyl alcohol film was prepared on a glass substrate via the casting method. Optical microscope image of the film was taken by an optical microscope and analyzed by an Image J and origin 2008 software where it was proved that the film was free of defects and holes and uniformly distributed over entire area of the substrate. The optical constants of the film were calculated via the optical absorbance and transmittance in the wavelength range 350–900 nm via the use of a set of known mathematical formulas together with Wemple and DiDomenico model. The optical conductivity and the electrical conductivity of the prepared film in response to external electric filed are obtained using two more equations where it was found that the prepared film have high optical conductivity of the order of 1012 s−1 and an electrical conductivity of the order of 104 (S cm−1).

A novel azo compound derived from ethyl-4-amino benzoate: synthesis, nonlinear optical properties and DFT investigations

“…Recently, vast number of researchers are interested in finding and/or preparing systems of high quality that behave nonlinearly towards laser light beams since the index of refraction becomes intensity dependent as it is exposed to electric field of high values. The laser beam interaction with nonlinear materials leads to variety of effects in the transverse dimensions viz., self-focusing (SF) and defocusing (SDF), spatial ring formation, self-phase modulation, etc., [1][2][3][4][5][6][7][8][9][10][11]. Materials having high nonlinear optical (NLO) third-order properties and ultra-fast response time led to considerable scientific activities for their potential applications viz., optical computing, optical phase conjugation, all-optical switching (AOS), holography, spatial dark soliton transmission, optical power limiting, harmonic generation [12][13][14][15][16][17][18][19][20][21][22][23][24][25] etc.…”

Synthesis, DFT calculations and optical nonlinear properties of two derived Schiff base compounds from ethyl-4-amino benzoate

“…The passage of a continuous wave (CW) laser beam through a medium of the intensity-dependent index of refraction together with the coefficient of absorption leads to the number of amazing phenomena viz., selffocusing (SF) and defocusing (SDF), spatial ring formations, self-phase modulation (SPM), etc [1][2][3][4][5][6][7][8][9][10][11]. Based on the SPM and generally on the spatial self-phase modulation (SSPM) two types of interferences occur viz., destructive and constructive within the laser beam leads to a set of circular diffraction ring patterns (DRPs) depending on the laser beam power.…”

Synthesis, optical nonlinear properties, and all‐optical switching of curcumin analogues

“…During the last three decades, there has been great needs for materials with high optical nonlinearities and fast response times which can be used with low power laser beams, [1][2][3][4][5][6][7][8][9][10] in variety of applications such as optical switching, [11,12] imaging processing, [13] data storage, [14][15][16][17] phase conjugation, [18] and optical limiting. [19][20][21][22][23][24][25] When a laser beam with fundamental, TEM 00 , transverse mode and continuous wave (cw) traverses a material, an intensity-dependent refraction index can be observed in the medium.…”

“…During the last three decades, there has been great needs for materials with high optical nonlinearities and fast response times which can be used with low power laser beams, [ 1–10 ] in variety of applications such as optical switching, [ 11,12 ] imaging processing, [ 13 ] data storage, [ 14–17 ] phase conjugation, [ 18 ] and optical limiting. [ 19–25 ]…”