Enhancing SPDC brightness using elliptical pump shapes

Aitor Villar*, Arian Stolk, Alexander Lohrmann, Alexander Ling

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review


We report on the use of elliptical pump spatial modes to increase the observed brightness of spontaneous parametric downconversion in critically phase-matched crystals. Simulations qualitatively predict this improvement, which depends on the eccentricity and orientation of the pump ellipse. We experimentally confirm a factor of two improvement in brightness when compared to the traditional circular-symmetric pump spatial modes. These results support previous theoretical work that proposes the use of elliptical pump modes to enhance the performance of parametric processes in anisotropic materials.

Original languageEnglish
Pages (from-to)32235-32241
Number of pages7
JournalOptics Express
Issue number22
Publication statusPublished - 2019
Externally publishedYes


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