Laboratory for Nonlinear Optics (LNO)

Header LSX

The PSI Laboratory for Nonlinear Optics develops and operates state-of-the-art laser systems for the operation of and for experiments at the X-ray large research facilities of PSI.

OAM Beam

High-resolution ptychographic imaging at a seeded free-electron laser source using OAM beams

Electromagnetic waves possessing orbital angular momentum (OAM) are powerful tools for applications in optical communications, quantum technologies, and optical tweezers. Now, a consortium of collaborators in France, Italy, Slovenia, Spain, Switzerland, Sweden, and the US reports on using such beams in the extreme ultraviolet region for ptychographic imaging in the cover page article of Optica 11, Issue 3. By controlling the topological charge, the researchers achieve an improvement of 30% in image resolution.