Nonlinear Properties of PMMA Composite Thin Films | Chapter 5 | Science and Technology - Recent Updates and Future Prospects Vol. 5

 

The optical properties of thin films composed of TPP-infused PMMA were investigated using the z-scan technique. These films, ranging in thickness from 200 to 400 nm, were prepared using spin-coating. Despite varying concentrations of TPP in the PMMA matrix, the UV-visible absorption spectrum displayed no shifts in absorption wavelength. However, the composite films demonstrated robust nonlinear absorption (NLA) and nonlinear refraction (NLR) coefficients, ranging from 10-6 to 10-5 m/W and 10-13 to 10-12 m2/W, respectively. Notably, the third-order nonlinear susceptibility, χ(3), increased with higher TPP concentrations. These findings suggest the potential of these TPP-incorporated PMMA spin-coated thin films for the fabrication of nonlinear optical devices.

 

Author(s) Details:

Clavian L M
Department of Physics, St. Joseph Engineering College, Vamanjoor, Mangaluru-575028, India.

 

Dr. Rajesh Kumar P C
Department of Physics, St. Joseph Engineering College, Vamanjoor, Mangaluru-575028, India.

 

Anil Kumar K. V
Department of Physics, Mangalore University, Mangalagangothri, Mangaluru-574199, India.

Narayana Rao D
Laser Lab, School of Physics, University of Hyderabad, Hyderabad-500046, India.

 

Shihab N K
Laser Lab, School of Physics, University of Hyderabad, Hyderabad-500046, India.

 

Ganesh Sanjeev
Department of Physics, Mangalore University, Mangalagangothri, Mangaluru-574199, India.

Please see the link here: https://stm.bookpi.org/STRUFP-V5/article/view/14865