为了研究不同颜色吸收体对光声成像的影响,采用针状的PVDF膜水听器,接收面积的直径为1 mm,光源为YAG激光器,波长为1 064 nm,重复频率为20 Hz,脉宽为6 ns。由仿真结果表明,暗红、深红、红色对激光波长吸收较好,而淡红色对激光波长吸收较差;同样由实验结果表明,黑色的头发和橡胶环对激光的吸收比淡红色的猪肝的吸收要强一些。 In order to study the effect of different color absorbers on photoacoustic imaging, a needle-shaped PVDF hydrophone was used. The diameter of the receiving area was 1 mm. The light source was a YAG laser with a wavelength of 1 064 nm and a repetition frequency of 20 Hz. The pulse width 6 ns. The simulation results show that dark red, dark red and red absorb the laser wavelength better, while the light red absorb less the laser wavelength. Similarly, the experimental results show that the black hair and the rubber ring absorb the laser more than the red pig Liver absorption stronger.