TITLE

Phase stability theory of Bloch eigenstates in active photonic lattices with coupled microlaser arrays

AUTHOR(S)
Riyopoulos, S.
PUB. DATE
December 2005
SOURCE
European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Dec2005, Vol. 36 Issue 3, p295
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An generic model for the lattice dynamics of coupled microlaser arrays is employed for the lattice stability analysis. Nonlinear cross-cavity gain-coupling effects, characterizing active lattices, are included via the gain dependence on carrier depletion and cross-cavity hole burning. Passive near neighbor interactions (inter-cavity absorption and mirror reflection interference) are also included. The introduction of lattice-orthogonal modes simplifies the derivation of the coupled rate equations. The interaction phase among sites exhibits spontaneous long range “crystallization" into periodic Bloch states whereby the cavity radiation envelopes behave as laser “macro-atoms". The sign of the coupling coefficients as a function of geometry determines in- vs. out-of-phase locking and has practical implications for array design. Emphasis is placed on the stability analysis of Bloch states by including earlier omitted [1] effects of phase perturbations. The importance of the linewidth factor ι is uncovered: unconditional stability results for ι ≤1, otherwise a stability threshold exists for the coupling strength among sites. Choice of low ι gain material permits phase stability with high coupling strength, beneficial in overcoming manufacturing variations among array cavity parameters.
ACCESSION #
18891944

 

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