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Q: Fachverband Quantenoptik und Photonik

Q 27: Quantum Optics III

Q 27.8: Vortrag

Mittwoch, 11. März 2020, 12:45–13:00, f342

Stochastic coherence analysis of superluminescent diodes — •Kai Hansmann and Reinhold Walser — Institut für Angewandte Physik, Technische Universität Darmstadt, Hochschulstr. 4a, 64289 Darmstadt

Superluminescent diodes are semiconductor-based opto-electronic emitters with a wide range of experimental applications. For example so-called broad-area quantum-dot superluminescent diodes (QDSLDs) can be used as light sources for ghost imaging without the necessity of external diffusers [1]. The unique coherence properties of such diodes have already been the subject of theoretical investigations from a quantum mechanical point of view [2].

We present a stochastic approach to the investigation of the temporal coherence properties of QDSLDs. For this we model the spectral emission characteristics of such diodes as a superposition of stochastically fluctuating electric fields and use numerical simulations to perform coherence investigations. The results show that the properties of this spectrally broadband emitter with large intensity output can be investigated from a quantum mechanical and stochastic point of view equivalently.

[1] S. Hartmann et al.. A novel semiconductor-based, fully incoherent amplified spontaneous emission light source for ghost imaging. Scientific Reports, 7:41866, 2017.

[2] S. Hartmann et al.. Tailored quantum statistics from broadband states of light. New Journal of Physics, 17:043039, 2015.