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INTRODUCTION AND ELEMENTARY REVIEW
THE INTERACTION OF ELECTROMAGNETIC
4 other sections not shown
absorption coefficient amplified amplitude angular momentum approximately atoms axis beam calculated cavity mode collisions components conduction band configuration considered coupling cross section crystal decay dependent dipole discharge distribution Doppler Doppler broadening effects Einstein coefficients electric field electromagnetic energy levels example excimer excited frequency gain coefficient gain profile gas laser Gaussian hole homogeneously broadened integral intensity interaction inversion density ion laser laser cavity laser level laser transitions lasing level system lifetime light linewidth Lorenzian magnetic medium mirrors molecules number density number of atoms orbital oscillations output photon plasma polarization population inversion potential propagating pulse Q-switching quantum number radiation radiative refractive index resonant rotational ruby laser saturation selection rules semiconductor shown in Figure single mode single particle small signal gain solutions spatial hole burning spectral spontaneous emission standing wave stimulated emission structure temperature thermal total number valence band vector velocity vibrational wave functions wavelength whilst width zero