The Linford formula for the intensity output from a medium undergoing amplified spontaneous emission is generalized to the case when the gain coefficient is position dependent. The generalized Linford formula is of particular interest in the field of x-ray lasers, because it provides a better tool for fitting the experimental data to infer the parameters of the medium and affords more insight into the appropriate pumping scheme.
© 2000 Optical Society of America
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3430) Lasers and laser optics : Laser theory
(140.3460) Lasers and laser optics : Lasers
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
Riccardo Tommasini and Ernst E. Fill, "Generalized Linford formula," J. Opt. Soc. Am. B 17, 1665-1670 (2000)