What is it about?
GeSe exhibits in-plane optical anisotropy similar to black phosphorus and other two-dimensional materials, so it is believed to have remarkable nonlinear optical (NLO) properties. In this work, amorphous GeSe films were prepared by vacuum thermal evaporation. After annealing at 450℃, GeSe films exhibited a polycrystalline phase. The NLO properties of these GeSe films were investigated by the Z-scan technique.
Featured Image
Photo by Ramón Salinero on Unsplash
Why is it important?
The results indicated that GeSe films exhibited typical reverse saturable absorption (RSA) and self-focusing phenomenon. It was also found that the nonlinear optical parameters and laser-induced damage threshold of annealed recrystallized GeSe films were significantly improved.
Perspectives
These results reveal that the polycrystalline GeSe film is a promising solid-state NLO material for application in optical limiting devices and laser protection.
jiayu zhang
Southeast University
Read the Original
This page is a summary of: Nonlinear optical response of polycrystalline GeSe films, Frontiers in Human Neuroscience, June 2023, American Institute of Physics,
DOI: 10.1063/5.0151433.
You can read the full text:
Contributors
The following have contributed to this page
