PHOTOPYROELECTRIC SPATIALLY RESOLVED IMAGING OF THERMAL WAVE FIELDS

被引：22

作者：

MIESZKOWSKI, M

MANDELIS, A

机构：

[1] Photoacoustic and Photothermal Sciences Laboratory, Ontario Laser and Lightwave Research Center, Department of Mechanical Engineering University of Toronto, Toronto

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1990年 / 7卷 / 04期

关键词：

D O I：

10.1364/JOSAA.7.000552

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatially resolved photothermal scanning imaging of metallic samples using the photopyroelectric (P2E) effect is reported. Unlike that for conventional photothermal detection, the new instrumentation involves polyvinylidene fluoride (PVDF) thin pyroelectric film and a metal-tip detection geometry, which permits monitoring of the local values of the laser-induced diffractive and/or interferometric thermal-wave field in a sample. The effects of the relative PVDF surface-tip position, of the laser beam modulation frequency, and of the presence of subsurface defects in the sample on the spatial resolution of the P2E images are examined. © 1990 Optical Society of America.

引用

页码：552 / 557

页数：6

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