Assertion: quantum cascade laser | /r/HasProperty | demonstrated by alfred cho
Facets:
value: in 1994
type: TEMPORAL
value: at bell laboratories
type: LOCATION
Source sentences:
text: Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, and Alfred Cho at Bell Laboratories in 1994.