A four-state programmable mid-infrared band-stop filter exploiting a Ge₂Sb₂Te₅ film and VO₂ nanoparticles

• Main Authors: Meng, Yun, Li, Dan, Zhang, Chong, Wang, Yang, Simpson; Robert, Long, Yi
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Materials; Optical Properties; Nanoparticles
• Online Access: https://hdl.handle.net/10356/152954
• Institution: Nanyang Technological University

We designed and demonstrated a four-state programmable mid-infrared band-stop absorber that exploits two different phase-change materials. This programmability is possible by exploiting Fabry–P erot resonances in a Ge2Sb2Te5 film and vanadium dioxide nanoparticles’ (VO2 NPs) dual layer. The reflecti...