[16p-A303-1~13] 3.2 Information photonics and image engineering (formerly 3.3)

[16p-A303-6] Digital holography of underwater heated gold nanoparticles

〇Yuto Jonai¹, Yoshio Hayasaki¹ (1.Utsunomiya Univ.CORE)

Keywords:digital holography

Laser irradiation of gold nanoparticles in water causes deformation of the gold nanoparticles and heating of the surrounding water, resulting in a change in refractive index. With sufficient heating, the water vaporizes, producing bubbles. We are attempting to observe a series of physical processes using pump-and-probe digital holography. First, using digital holography and Fourier transform methods, we will establish observations of the behavior of gold nanoparticles heated by a CW near-infrared laser on a millisecond time scale.