Abstract

Signals for gas-microphone photoacoustic (PA) and optical-probe methods are analyzed, and images for both cases are calculated and displayed. A one-dimensional theory is extended to include both schemes with a two-dimensional arrangement. An image of the optical-probe method shows higher definition than the gas-microphone PA method. Furthermore, a concept of a holoscan, which is applicable to not only PA imaging but generally also to scanned-image microscopy, is introduced to imaging science. Amplitude, phase, and holoscan images for both schemes are calculated; as a result, holoscan images show clearer edges at corners of a sample in both cases. Finally, images processed by deconvolution show higher fidelity in both schemes.

© 1994 Optical Society of America

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