Assertion: laser | /r/CapableOf | generate light
Facets:
value: from quantum wells
type: LOCATION
Source sentences:
text: So again, a laser generates a light that is rigorously one color.
text: Red lasers can be built on gallium arsenide (GaAs) semiconductors, upon which a dozen layers of atoms are placed to form the part of the laser that generates light from quantum wells.