Tailoring Spatial Modes Produced by Stimulated Parametric Downconversion

TL;DR

This paper demonstrates how to control and tailor the spatial modes of light generated by stimulated parametric downconversion, enabling precise manipulation of beam size, propagation, and mode fidelity for advanced optical applications.

Contribution

It introduces a method to transfer and control the spatial structure of pump beams to stimulated idler beams, enhancing mode fidelity and uniformity in StimPDC.

Findings

Controlled generation of spatial modes via StimPDC

Fidelity of modes depends on pump and seed beam characteristics

Angular basis ensures uniform mode fidelity

Abstract

We theoretically study and experimentally demonstrate controlled generation of spatial modes of light via stimulated parametric downconversion (StimPDC) by transferring the spatial structure of a pump beam to the stimulated idler beam. We show how the beam characteristics of the stimulated beam depends on both the pump and seed beam's characteristics, enabling experimental control over size and propagation behavior. We also show how to control and improve the fidelity of different spatial modes, and demonstrate that the angular basis ensures uniform fidelity across modes generated with StimPDC.