Direct measurement of the coupled spatiotemporal coherence of parametric down-conversion under negative group-velocity dispersion

Cutipa Giménez P, Spasibko KY, Chekhova M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Optics Letters Optical Society of America

Book Volume: 45

Pages Range: 3581-3584

Journal Issue: 13

DOI: 10.1364/OL.397700

Abstract

We present a direct measurement of the spatiotemporal coherence of parametric down-conversion in the range of negative group-velocity dispersion. In this case, the frequency-angular spectra are ring-shaped, and temporal coherence is coupled to spatial coherence. Correspondingly, the lack of coherence due to spatial displacement can be compensated for with the introduction of time delay. We show a simple technique, based on a modified Mach-Zehnder interferometer, which allows us to measure time coherence and near-field space coherence simultaneously, with complete control over both variables. This technique is also suitable for the measurement of second-order coherence, where the main applications are related to two-photon spectroscopy.

Authors with CRIS profile

Paula Cutipa Giménez Lehrstuhl für Experimentalphysik Maria Chekhova Lehrstuhl für Experimentalphysik

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Cutipa Giménez, P., Spasibko, K.Y., & Chekhova, M. (2020). Direct measurement of the coupled spatiotemporal coherence of parametric down-conversion under negative group-velocity dispersion. Optics Letters, 45(13), 3581-3584. https://doi.org/10.1364/OL.397700

MLA:

Cutipa Giménez, Paula, Kirill Yu Spasibko, and Maria Chekhova. "Direct measurement of the coupled spatiotemporal coherence of parametric down-conversion under negative group-velocity dispersion." Optics Letters 45.13 (2020): 3581-3584.

BibTeX: Download