Laser Physics: out-of-syllabus check
Optional questions on stimulated emission, population inversion, laser operation and beam properties, beyond the H2 syllabus.
Learning goals
- Explain excitation, spontaneous emission and stimulated emission.
- Explain metastable states, pumping, population inversion, threshold, optical feedback, output coupling and cavity modes.
- Relate laser operation to coherence, linewidth, divergence, irradiance, photon quantities and a helium-neon example.
Practice: the questions you got wrong. This doesn't count towards your progress.
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Beyond the syllabus: optional enrichment that does not count towards your progress.