Altering the Reflection Phase for Nano‐Polaritons: A Case Study of Hyperbolic Surface Polaritons in Hexagonal Boron Nitride
Abstract
Polaritons—confined light–matter waves—in van der Waals (vdW) materials are a research frontier in light–matter interactions with demonstrated advances in nanophotonics. Reflection, as a fundamental phenomenon involving waves, is particularly important for vdW polaritons, predominantly because it enables the investigation of polariton standing waves using the scanning probe technique. While previous works demonstrate a rigid phase ≈π/4 for the polariton reflection, herein is reported the altering of the polariton reflection phase by varying the geometry of polaritonic microstructures for the case study of hyperbolic surface polaritons (HSPs) in hexagonal boron nitride (hBN). Specifically, it is demonstrated that the polariton reflection phase can be systematically altered by varying the corner angle of the hBN microstructures, and that it experiences a π jump around a specific angle. This behavior, which is a consequence of the mathematical nature of the reflection coefficient, is therefore expected in other physical phenomena.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 30, 2022
- Source ID
- 10.1002/adom.202102723
Entities
People
- Alejandro Manjavacas
- Cheng‐chien Chen
- Eli Harris
- James H Edgar
- Jiahan Li
- Jialiang Shen
- Mingyuan Chen
- Qiong Ma
- Siyuan Dai
- Stephen Sanders
Organizations
- Auburn University
- Boston College
- Kansas State University
- National Science Foundation
- Office of Naval Research
- University of Alabama at Birmingham
- University of New Mexico