Spectral line

Saturation

Spectral hole burning

Two-photon spectral hole burning

p-pulse

Rabi oscillations

Optical nutation and free induction decay

Quantum beats

Population inversion

Ramsey fringes

Sum frequency generation

Difference frequency generation

Stimulated resonance Raman effect

Coherent population trapping

Electromagnetically induced transparency

Two-photon absorption

Raman scattering (Stokes)

Raman scattering (anti-Stokes)

Two-pulse echo

Three-pulse echo

Raman echo

Photon echo memory

Carr-Purcell echo train

Spectral grating