Title: Theory of the Spatial Structure of Non-linear Modes in Novel and Complex Laser Cavities
Abstract: A new formalism [1,2] for calculating exact steady-state non-linear multi-mode lasing states for complex resonators is developed and applied to conventional edge-emitting lasers and to lasers with chaotic or random cavities. The theory solves a long-standing problem in lasing theory: how to describe the multi-mode lasing states of an open cavity. Moreover it includes the effects of mode competition and spatial hole-burning to all orders within the approximation of stationary inversion. Lasing modes are expanded in terms of sets of biorthogonal "constant flux" (CF) states and satisfy a self-consistent equation. For high finesse cavities each lasing mode is proportional to one CF state which inside the cavity behaves like a linear resonance; for low finesse as in a random laser, novel composite modes are predicted which do not correspond to any passive cavity resonance.
Publication Year: 2007
Publication Date: 2007-07-01
Language: en
Type: article
Indexed In: ['crossref']
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