Thermal lens investigation of DAZA polymer using dual beam z-scan technique

Abstract

The thermal lens properties of DAZA polymer solution have been investigated using the dual beam thermal lens method in a mode-mismatched configuration. The thermal lens parameters of vx, D, θ, dn/dT, tc and Peclet Number (PE) were extracted using the theoretical thermal lens model. Our results have shown that with the increasing of the input laser power, the tc and PE have decreased, while the parameter of θ has increased with the increasing of the input laser power.

Keywords

• Thermal lens effect
• DAZA polymer
• Thermo-optic coefficient