Optics and Photonics Society of Iran

In this paper, linear and third order nonlinear optical properties of Azure B were investigated in solvent media with different polarity. For this reason, spectroscopic and Z-scan techniques were used for investigation of optical properties of Azure B. According to the experimental results, Azure B dye tends to indicate positive solvatochromism behavior by increasing solvent polarity characteristics. Furthermore, solvent dipolarity/polarizability and solvent hydrogen bond acceptor abilities have significant roles on the saturable absorption properties of selected thiazine dye. Hence, media polarity as an important factor can be used for controlling the optical properties of Azure B.