WJEC A-level Physics A420QS · C3.5(c)

Population inversion and two-level systems

Code: C3.5(c)
In: C3.5 Lasers
Topic: C3 Component 3: Light, Nuclei and Options
Course: A-level Physics A420QS
Board: WJEC

Codes and titles are read by a script from WJEC's published specification and have not been checked by a person. What each point covers is in the specification itself: WJEC’s specification.

Points in C3.5 Lasers

C3.5(a) Stimulated emission
C3.5(b) Population inversion in lasers
C3.5(c) Population inversion and two-level systems
C3.5(d) Population inversion in three- and four-level systems
C3.5(e) The process of pumping and its purpose
C3.5(f) Structure of a laser
C3.5(g) Semiconductor lasers: advantages and uses