| 摘要 |
PURPOSE:To detect the information on the surface and the inside of a sample stably and highly accurately with an opto-acoustic signal. CONSTITUTION:When the fact that the phase deviation at each sample point is steeply lowered or increased in comparison with the phase deviation at a sample point in the vicinity of the above described point is recognized under specified conditions, it is detected that the phase skipping is generated in the phase deviation at the sample point. The phase deviation at the sample point is effectively corrected by adding 2pi or -2pi to the phase deviation at the sample point. |
