Physics

Laser

Analytical Chemistry (journal)

Optics

Radiation

Composite material

Chemistry

Materials science

Thermal

Nano-

Quantum mechanics

Refractive index

Chromatography

Optoelectronics

Linearity

Thermodynamics

The non-linear refractive index of Ag nano-fluids prepared by γ-radiation method was investigated using a single beam z-scan technique. Under CW 532 nm laser excitation with power output of 40 mW, the Ag nano-fluids showed a large thermal-induced non-linear refractive index. In the present work it was determined that the non-linear refractive index for Ag nano-fluids is -4.80×10 -8 cm 2 /W. The value of ∆n 0 was calculated to be -2.05×10 -4 . Our measurements also confirmed that the non-linear phenomenon was caused by the self-defocusing process making them good candidates for non linear optical devices.

Thermal-Induced Non-linearity of Ag Nano-fluid Prepared using γ-Radiation Method (Induksi-Terma Ketidak-Linearan Nanocecair Ag disedia Menggunakan Kaedah Sinaran-γ)