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We have performed photoacoustic imaging of subsurface in a metal using a microphone detection method. A computer controlled photoacoustic imaging system is developed. A sample in a high sensitive photoacoustic cell is scanned mechanically and photoacoustic signals generated by focused laser beam irradiation are fed into a lock-in amplifier. The magnitude of photoacoustic signal is displayed on a graphic terminal of a micro-computer which controls the imaging system. Laser power dependence of the photoacoustic signal and some examples of subsurface imaging are presented.
- 公益社団法人 応用物理学会分科会 日本光学会の論文
公益社団法人 応用物理学会分科会 日本光学会 | 論文
- Needs from Astronomy to Optics"Large Optical Telescopes"
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- Interrelation between Visual Mechanisms, and their Temporal Characteristics
- High-Density Image Recording by Holographic Method