oxygen laser in a sentence

1. He was co-discoverer of lasers using electron impact excitation in each of the noble gases, dissociative excitation transfer in the neon-oxygen laser ( the first chemical laser ), and collision excitation in several metal vapor lasers.
2. He was co-discoverer of lasers using electron-impact excitation in each of the noble gases, dissociative excitation transfer in the neon oxygen laser ( the first chemical laser ), and collision excitation in several metal-vapor lasers.
3. It's difficult to find oxygen laser in a sentence.