Abstract
Based on the geometrical modeling of the unified gain coefficient and the reported amplified spontaneous emission (ASE) output energy measurement versus amplifying excitation length, 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, , was not avoidable. It was found that while the profile follows the introduced gain-modeling formulation, it is, however, slightly lower than the KrF laser gain profile, , 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.
©2012 Optical Society of America
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