What laser is made of
A source of coherent light (Maiman; Basov, Prokhorov, Townes).
- Mirror — has part. A resonator made of mirrors.
- Stimulated emission — uses. The working principle of the laser.
- Semiconductor — is made of. Maiman’s first laser was a ruby crystal; today it is more often a semiconductor.
- Glass — is made of. The optics are glass.