Method to improve absorption measurement sensitivity of thin films with surface thermal lens technique

作者：Fan SH^*; He HB; Shao JD; Fan ZX; Zhao YA

来源：Acta Physica Sinica, 2006, 55(2): 758-763.

• absorption measurement
• surface thermal lens
• photo-thermal deformation
• thin film

In order to improve the sensitivity of surface thermal lens (STL) absorption measurement, numerical simulations are performed based on STL diffraction theory. The optimization method for choosing proper instrument parameters, including the size and position of probe laser waist and the position of detecting Fiber, is developed from the simulation. The sensitivity of the instrument reaches 0.1 ppm after the optimization.

• 出版日期2006-2
• 单位中国科学院上海光学精密机械研究所