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Updated: Jul 5, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Generation of polarization-shaped ultraviolet femtosecond pulses
Reimer Selle1, Patrick Nuernberger, Florian Langhojer
1Physikalisches Institut, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
Abstract:
We experimentally demonstrate the generation and characterization of polarization-shaped femtosecond laser pulses in the ultraviolet at a central wavelength of 400 nm. Near-infrared laser pulses are first polarization shaped and then frequency doubled in an interferometrically stable setup that employs two perpendicularly oriented nonlinear crystals. A new pulse shaper design involving volume phase holographic gratings reduces losses and hence leads to an increase in pulse energy.

