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Ab initio theory of quantum fluctuations and relaxation oscillations in multimode lasers
Name
1811.00108.pdf
Description
Accepted version
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1.2 MB
Format
Adobe PDF
Checksum (MD5)
d5fb84e0c231e9a87b64f5aabe0161fb
Publisher
The Optical Society
Version
Author's final manuscript
Abstract
© 2019 Optical Society of America We present an ab initio semi-analytical solution for the noise spectrum of complex-cavity microstructured lasers, including central Lorentzian peaks at the multimode lasing frequencies and additional sidepeaks due to relaxation-oscillation (RO) dynamics. In Phys. Rev. A 91, 063806 (2015), we computed the central-peak linewidths by solving generalized laser rate equations, which we derived from the Maxwell–Bloch equations by invoking the fluctuation–dissipation theorem to relate the noise correlations to the steady-state lasing properties. Here, we generalize this approach and obtain the entire laser spectrum, focusing on the RO sidepeaks. Our formulation treats inhomogeneity, cavity openness, nonlinearity, and multimode effects accurately. We find a number of new effects, including new multimode RO sidepeaks and three generalized α factors. Last, we apply our formulas to compute the noise spectrum of single-mode and multimode photonic-crystal lasers.
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
10.1364/JOSAB.36.000C22
