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arXiv · 1806.10666

Real time $g^{(2)}$ monitoring at 100 kHz

Carolin Lüders·Johannes Thewes·Marc Aßmann
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Abstract

We introduce a technique to determine photon correlations of optical light fields in real time. The method is based on ultrafast phase-randomized homodyne detection and allows us to follow the temporal evolution of the second-order correlation function $g^{(2)}(0)$ of a light field. We demonstrate the capabilities of our approach by applying it to a laser diode operated in the threshold region. In particular, we are able to monitor the emission dynamics of the diode switching back and forth between lasing and spontaneous emission with a $g^{(2)}(0)$-sampling rate of 100 kHz.

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Carolin Lüders, Johannes Thewes, Marc Aßmann. 2018-06-22. Real time $g^{(2)}$ monitoring at 100 kHz. https://doi.org/10.1364/oe.26.024854

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