Mid-infrared giant optical chirality induced by multipole degeneracy in a diamond metasurface
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-02-03 |
| Journal | Optics Letters |
| Authors | Hao Wang, Shu Chen, Xing Liu, Yanan Yu, TingāHui Xiao |
| Institutions | The University of Tokyo, Henan Academy of Sciences |
Abstract
Section titled āAbstractāOptical chirality is a fundamental property of light that plays a crucial role in chiroptical spectroscopy, analytical chemistry, spin photonics, and astrobiology. However, giant optical chirality at the wavelength beyond 15 Ī¼m remains untapped, which hinders its various applications, such as ultrasensitive vibrational circular dichroism, in the mid-infrared region. Here we propose and theoretically present giant optical chirality with a, to our knowledge, record-high value of ā¼330 at the wavelength beyond 15 Ī¼m in a diamond metasurface. This is enabled by tailoring the multipole degeneracy and leveraging the low optical loss of the diamond metasurface. This work provides a new method for boosting the optical chirality at the wavelength beyond 15 Ī¼m.