Exiting research alert!

Measurement of optically induced broken time‑reversal symmetry in atomically thin crystals.

Did you know that it is now possible to directly observe the optically induced time-reversal symmetry breaking in monolayer and bilayer transition metal dichalcogenide crystals?

The latest Nature Photonics publication “Measurement of optically induced broken time-reversal symmetry in atomically thin crystals” demonstrates exactly this. By measuring the third-harmonic Faraday rotation as a function of polarization and input power, the authors quantify how spin, valley, and layer couplings give rise to non-reciprocal optical effects. The results agree closely with analytical models and open new avenues for exploring fundamental symmetries in 2D materials. The method presented is universally applicable to any material system and can be easily implemented experimentally, highlighting its versatility. The effect is particularly strong at excitonic resonances, which makes the wavelength tunability of the OPO an important asset.

We are proud that APE, with our Levante IR OPOs, was able to support the researchers in this outstanding work.

Congratulations to the authors for this remarkable achievement: Florentine Friedrich, Paul Herrmann, Shridhar Shanbhag, Sebastian Klimmer, Jan Wilhelm and Giancarlo Soavi. 🎉

📜 Read the open-access publication: https://lnkd.in/dSkQZDmS
🔗 Information about the used Levante IR fs: https://lnkd.in/eeZZV66