Abstract
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 language | English |
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Pages (from-to) | 32235-32241 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 27 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2019 |
Externally published | Yes |