A simple derivation of the cavity dispersion equation for high-gain pulsed lasers, Δλ ≈ Δθ/∂λ)-1, is provided by using Dirac’s notation for probability amplitudes as applied to the analysis of dispersive cavities.
© 1992 Optical Society of America
F. J. Duarte, "Cavity dispersion equation Δλ ≈ Δθ(∂θ/∂λ)-1: a note on its origin," Appl. Opt. 31, 6979-6982 (1992)