arXiv:2307.06843

Spectral characterization of a SPDC source with a fast broadband spectrometer

Brianna Farella, Gregory Medwig, Raphael A. Abrahão, ANDREI NOMEROTSKI

Published Jul 6, 2023• 1 citation

Abstract

Knowing the properties of the single photons produced in a Spontaneous Parametric Down-Conversion (SPDC) source can be crucial for specific applications and uses. In particular, the spectral properties are of key relevance. Here, we investigate a commercial SPDC source using our fast broadband spectrometer. Our analysis is a valid method for other SPDC sources, as well as other single-photon generation techniques, thus providing a good example of how to use this spectrometer design. We calibrate the spectrometer using known lines of the argon emission spectrum. We show that the two down-converted photons from the SPDC source have different spectral properties depending on the pump power, and in which condition we measured spectrally similar down-converted photons. Lastly, we were able to reconstruct and investigate the spectral information for the pump photon.

DOI: 10.48550/arxiv.2307.06843

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