3 papers
physics.optics2025
Polarization-Resolved Chlorophyll Imaging for Non-Invasive Plant Tissue Assessment Using a Silicon-Rich Nitride Metalens Array
Alireza Khalilian, Mehdi Sh. Yeganeh, Konstantin Tsoi +3
Polarization-sensitive imaging enhances contrast and reveals structural features in biological tissues that are often missed by intensity-based methods, but its adoption is limited…
physics.optics2025
Chlorophyll Absorption Analysis Enabled by Silicon-Rich Nitride-Based Concentric Ring Metalens
Alireza Khalilian, Bowen Yu, Mehdi Sh. Yeganeh +1
A silicon-rich nitride (SRN) concentric-ring metalens, operating at 685 nm, achieves measured numerical aperture of 0.5 and 36\% focusing efficiency, enabling metalens-based chloro…
physics.optics2024
Polarization-based Metalenses with High Numerical Aperture and Focusing Efficiency Utilizing Silicon-rich Nitride
Alireza Khalilian, Bowen Yu, Yasha Yi
We explore the cutting-edge application of silicon-rich nitride (SRN) in the realm of high numerical aperture (NA) metalens design, focusing on the crucial role of pitch size optim…