What maser is made of
The microwave forerunner of the laser.
- Maser resonant cavity — has part. A cavity tuned to the transition frequency.
- Electrostatic state selector — has part. It selects the excited molecules.
- Stimulated emission — uses. The same principle in microwaves.
- Ammonia — uses. The working substance.
- Ammonia — is made of. The first maser ran on ammonia.
- Copper — is made of. The resonator is copper.