Spectral characterization of a SPDC source with a fast broadband spectrometer

• URL: http://arxiv.org/abs/2307.06843v1
• Date: Thu, 6 Jul 2023 18:30:21 GMT
• Title: Spectral characterization of a SPDC source with a fast broadband spectrometer
• Authors: Brianna Farella, Gregory Medwig, Raphael A. Abrahao, and Andrei Nomerotski
• Abstract summary: Knowing the properties of the single photons produced in a Spontaneous Parametric Down-Conversion (SPDC) source can be crucial for specific applications and uses. Here, we investigate a commercial SPDC source using our fast broadband spectrometer.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

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