title: Theoretical application of z-dependent gain coefficient to describe amplified spontaneous emission.
abstract: Based on the geometrical modeling of the unified gain coefficient and the reported amplified spontaneous emission (ASE) output energy measurement ε(ASE) versus amplifying excitation length, l(AMP) in a KrF laser oscillator, we managed, as an example, to explain the ASE output energy behavior both numerically and analytically. In this approach, introducing the ASE gain-coefficient profile for the KrF laser, g(0,KrF)(ASE), was not avoidable. It was found that while the g(0,KrF)(ASE) profile follows the introduced gain-modeling formulation, it is, however, slightly lower than the KrF laser gain profile, g(0,KrF)(exp), deduced from the measurements reported by different researchers. The present approach, up to the present time, is able to explain all of the existing ambiguities on understanding the ASE behavior.
authors.affiliation: Laser and Optics Research Department, Nuclear Science and Technology Research Institute, Tehran, Iran. akbar_hariri@yahoo.com
authors.forename: A
authors.initials: A
authors.lastname: Hariri
authors.forename: S
authors.initials: S
authors.lastname: Sarikhani