Real-time three-dimensional vibration mode visualization system based on laser speckle interference
- Resource Type
- Conference
- Authors
- Yano, Y.; Watanabe, Y.; Ishii, T.; Goka, S.; Sato, T.; Sekimoto, H.
- Source
- 2010 IEEE International Frequency Control Symposium Frequency Control Symposium (FCS), 2010 IEEE International. :380-383 Jun, 2010
- Subject
- Components, Circuits, Devices and Systems
Communication, Networking and Broadcast Technologies
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Vibrations
Optical resonators
Laser modes
Measurement by laser beam
Optical surface waves
Correlation
Laser beams
- Language
- ISSN
- 2327-1914
2327-1949
1075-6787
In this paper, we describe an improved system that visualizes the 3-D vibration modes on the device surface in quasi-real time without precision optical adjustment. We used three visible semiconductor lasers with adequately separated wavelengths. The incident angles of the lasers are set to detect the two in-plane vibrations and one out-of-plane vibration. A color video camera using three CCDs (red, green, and blue) captures the three isolated speckle images generated by each laser. The experimental results using a rectangular AT-cut quartz resonator show the effectiveness of the system.