Third-order non-linear optical susceptibility measurements of thin films of 3-methylthiophene and methylmethacrylate copolymers

1993 ◽  
Vol 235 (1-2) ◽  
pp. 175-181 ◽  
Author(s):  
Hari Singh Nalwa
Keyword(s):  
Thin Films ◽  
Third Order ◽  
Optical Susceptibility ◽  
Non Linear ◽  
Linear Optical

scholarly journals Influence of Annealing Temperatures on Nonlinear Optical, Dielectric, Semiconducting Results, and Fermi Level Position for CdP0.03Te0.97 Thin Film

2021 ◽  
Vol 12 (2) ◽  
pp. 1916-1926
Keyword(s):  
Refractive Index ◽  
Energy Loss ◽  
Fermi Level ◽  
Optical Conductivity ◽  
Third Order ◽  
The Third ◽  
Annealing Temperatures ◽  
Optical Susceptibility ◽  
Non Linear ◽  
Linear Optical

CdP0.03Te0.97 thin films were deposited at room temperature using thermal evaporation and annealed at 100 and 200°C. The effect of annealing temperature Tann on both dispersion energy Ed and oscillating energy Eo were studied. The lattice dielectric constant εL and free carrier concentration/effective mass N/m* were calculated for these samples. The values of the first order of moment M-1, the third order of moment M-3, and static refractive index no were determined. Both of dielectric loss ε\ and dielectric tangent loss ε\\ for these films increased with photon energy (hν) and had the highest value higher than the energy gap Eg. All of the optical parameters such as real part of optical conductivity σ1, the imaginary part of optical conductivity σ2 and the relation between Volume Energy Loss/ Surface Energy Loss (VEL/SEL) were determined. The linear optical susceptibility χ(1) increased with Tann. The influence of annealing temperatures on all of the non-linear refractive index n2, the third-order non-linear optical susceptibility χ(3), and non-linear absorption coefficient βc were studied. Both of the electrical susceptibility χe and relative permittivity εr increased with Tann and had the highest value higher than Eg. The dependence of density valence band, conduction band, and position of Fermi level Ef were studied.

Third-order non-linear optical susceptibilities of CdIn2O4 thin films

1994 ◽  
Vol 178 ◽  
pp. 114-119 ◽  
Author(s):  
H. Semba ◽  
Y. Watanabe ◽  
M. Takata
Keyword(s):  
Thin Films ◽  
Third Order ◽  
Non Linear ◽  
Linear Optical

Synthesis, Characterization, and Optical Properties of Inorganic Polymer Films

1991 ◽  
Vol 244 ◽  
Author(s):  
Gregory J. Exarhos ◽  
William D. Samuels ◽  
Sarah D. Burton
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Optical Properties ◽  
Model Systems ◽  
Third Order ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical ◽  
Chemical Groups ◽  
Inorganic Polymer Films

ABSTRACTThe linear and non-linear optical response of phosphazene and siloxane polymers and cyclic precursors is influenced by the nature of chemical groups substituted onto the heteronuclear backbone chains. Polymer mechanical properties, chemical stability, and solubility also are affected. Significant variations in both second and third order susceptibilities have been measured for various substituted phosphazene materials. The electron donating tendency of substitutional groups appears to correlate with the measured non-linear optical properties determined by SHG and DFWM experiments in these systems where d¦-p¦ bonding along the polymer chain is important. Approaches to the synthesis, and deposition of these materials as thin films will be discussed. Variations in optical properties are highlighted for several model systems in terms of substitutional group perturbation to the chemical bonding between the chain heteroatoms.

Laser printing of azo-derivative thin films for non-linear optical applications

2015 ◽  
Vol 336 ◽  
pp. 200-205 ◽  
Author(s):  
Andreea Matei ◽  
Catalin Constantinescu ◽  
Bogdana Mitu ◽  
Mihaela Filipescu ◽  
Valentin Ion ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Printing ◽  
Non Linear ◽  
Linear Optical ◽  
Optical Applications
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