Quantitative test of general theories of the intrinsic laser linewidth
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Johnson_Quantitative test of general.pdf
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Author(s)
Cerjan, Alexander
Pick, Adi
Chong, Y. D.
Douglas Stone, A.
Johnson, Steven G
Date Issued
October 2015
Journal
Optics Express
Publisher
Optical Society of America
Citation
Cerjan, Alexander, Adi Pick, Y. D. Chong, Steven G. Johnson, and A. Douglas Stone. “Quantitative Test of General Theories of the Intrinsic Laser Linewidth.” Optics Express 23, no. 22 (October 21, 2015): 28316.
Version
Original manuscript
Abstract
We perform a first-principles calculation of the quantum-limited laser linewidth, testing the predictions of recently developed theories of the laser linewidth based on fluctuations about the known steady-state laser solutions against traditional forms of the Schawlow-Townes linewidth. The numerical study is based on finite-difference time-domain simulations of the semiclassical Maxwell-Bloch lasing equations, augmented with Langevin force terms, and includes the effects of dispersion, losses due to the open boundary of the laser cavity, and non-linear coupling between the amplitude and phase fluctuations (α factor). We find quantitative agreement between the numerical results and the predictions of the noisy steady-state ab initio laser theory (N-SALT), both in the variation of the linewidth with output power, as well as the emergence of side-peaks due to relaxation oscillations.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1364/oe.23.028316
