遗传工作者希望能把激光光束聚焦成微米数量级的小光斑,以便对主物细胞进行解剖,或者通过选择性对细胞核及染色体中的某一局部进行照射或破坏,借以研究有关细胞的合成、分裂及遗传等生命过程.我们通过经过改装的生物显微镜(国产油浸物镜100×NA=1.25),对红宝石激光器发出的激光(λ=6943埃)进行聚焦,并把聚焦后的激光束对准生物细胞进行照射,使细胞现出损伤区域(穿孔).在细胞上观察到的 Geneticists want to focus the laser beam to small spot sizes on the order of microns in order to dissect the host cells or to selectively synthesize and disrupt cells by selectively irradiating or destroying a portion of the nucleus and chromosome And genetic life process, etc. We through the modified biological microscope (domestic oil immersion objective 100 × NA = 1.25), ruby ​​laser laser (λ = 6943 angstrom) to focus and focus the laser beam at the biological The cells are irradiated to expose the cells to the damaged area (perforation), as observed on the cells