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Excess quantum noise due to mode non-orthogonality in dielectric microresonators.

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<mark>Journal publication date</mark>12/06/2009
<mark>Journal</mark>Physical review a
Issue number6
Pages (from-to)061801(R)
Publication StatusPublished
<mark>Original language</mark>English


This work presents a theory of the frequency-resolved light emission of active two-dimensional dielectric microresonators, which are characterized by a highly nonparaxial mode structure and frequently feature a position-dependent dielectric constant and nonuniform gain. The Lorentzian intensity profile is characterized by an appropriately generalized Petermann factor, a renormalized peak position, and the cold-cavity resonance lifetime Gamma. The theory also delivers a relation of Gamma to the laser threshold that improves earlier phenomenological expressions even for the case of a homogeneous medium.

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©2009 The American Physical Society