Holographic interferometry using a reference wave with a sinusoidally modulated amplitude |
| |
Authors: | N Takai M Yamada T Idogawa |
| |
Institution: | The authors are with the Department of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Japan |
| |
Abstract: | A method of holographic interferometry which uses an amplitude-modulated reference wave is proposed for investigating vibration phases. Sinusoidal amplitude modulation of a reference wave yields hologram fringes which are characterized by a function J21(α)cos2Δ, where α and Δ are related to vibration amplitudes and phases on object points, respectively. The resultant fringes indicate that vibration amplitude information and phase information are stored separately. The phase information of the vibration is easily obtained as brightness variations of the fringes, independently of the amplitude information. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|