Direct measurement of coherent light proportion from a practical laser source
arXiv:2310.10377 · doi:10.1103/PhysRevA.109.013706
Abstract
We present a technique to estimate the proportion of coherent emission in the light emitted by a practical laser source without spectral filtering. The technique is based on measuring interferometric photon correlations between the output ports of an asymmetric Mach-Zehnder interferometer. With this, we characterize the fraction of coherent emission in the light emitted by a laser diode when transiting through the lasing threshold.
arXiv comment7 pages, 4 figures
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