Improved method for three-dimensional imaging in photoacoustic microscope

被引：1
|
作者：
Minamide, A
Shida, S
Tokunaga, Y
机构：
[1] Kanazawa Tech Coll, Dept Elect Engn, Nonoichi, Ishikawa 9218601, Japan
[2] Kanazawa Inst Technol, Grad Sch Elect Engn & Elect, Nonoichi, Ishikawa 9218501, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 5B期
关键词：
3-D imaging; photoacoustic microscope system; graphite; photoacoustic signal; internal flaw; improvement of SNR; revised method of simultaneous measurement of multiple frequencies;
D O I：
10.1143/JJAP.38.3189
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The proposed new method partially solves the problem of low signal-to-noise-ratio (SNR) when modulation frequency increases. In this paper; we suggest to keep constant the amplitude of the detected photoacoustic (PA) signal by linearly increasing the modulation voltage versus frequency. The PA signal of the sample can be easily estimated by fast Fourier transform. It is also demonstrated that the presented method is able to detect a subsurface flaw in a graphite in the 10-100 Hz frequency range.
引用
收藏
页码：3189 / 3190
页数：2
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