Assertion: laser | /r/Synonym | optical maser
Facets:
value: at bell telephone laboratories
type: LOCATION
value: in the early technical literature
type: TEMPORAL
Source sentences:
text: In 1958, two years before Maiman demonstrated the laser (initially called an "optical maser"), Schawlow and Townes transferred the maser linewidth to the optical regime by replacing the thermal energy k B T {\displaystyle k_{\rm {B}}T} by the photon energy h ν L {\displaystyle
text: In the early technical literature, especially at Bell Telephone Laboratories, the laser was called an optical maser; this term is now obsolete.