Laser-ultrasound measurements with GCLAD for various air-gaps

Laser-ultrasound waves were generated on absorbing tape on the surface of a tissue phantom with high-energy (200mJ) laser pulses at 1064 nm. The resulting waves were recorded through many different propagation distances through air with GCLAD in transmission mode.采用波长1064纳米、能量为200毫焦的高能激光脉冲，在组织体模表面的吸收胶带上激发产生激光超声波。借助透射模式下的GCLAD技术，对在空气中经多种不同传播距离传输后的上述超声波进行了记录。