Two-photon absorption and quantum light spectroscopy have emerged as transformative tools in modern optical research. At the heart of these techniques is the simultaneous absorption of two photons to ...

This image depicts the structure of the proposed organic molecule, alongside the energy level diagrams of two-photon absorption (left side) and thermally activated delayed fluorescence (right side).

Coupling mid-infrared “idler” photons with near-infrared “signal” photons enables cheaper, smaller and more efficient machines for uses such as greenhouse gas monitoring to medical diagnostics.

Laser direct writing (LDW) employing multi-photon 3D polymerisation is a scientific and industrial lithography tool used in various fields such as micro-optics, medicine, metamaterials, programmable ...