WJEC AS Physics 2420QS · 2.8

Lasers

Code: 2.8
In: 2 AS Unit 2: Electricity and Light
Course: AS Physics 2420QS
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 under 2.8

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

Points in 2 AS Unit 2: Electricity and Light

2.1 Conduction of Electricity
2.2 Resistance
2.3 D.C. Circuits
2.4 The Nature of Waves
2.5 Wave Properties
2.6 Refraction of Light
2.7 Photons
2.8 Lasers