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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…
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…
Dual-Axis Beam-Steering OPA with purely Passive Phase Shifters
Venus Kakdarvishi, Bowen Yu, Yasha Yi
In this work, we present a multi-layer optical phased array (OPA) designed for dual-axis beam steering on a silicon (Si) platform, utilizing only wavelength tuning. Our design elim…
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…
Photonic integrated circuit with multiple waveguide layers for broadband high-efficient on-chip 3-D optical phased arrays in light detection and ranging applications
Dachuan Wu, Bowen Yu, Venus Kakdarvishi +1
Traditional photonic integrated circuit (PIC) inherits the mature CMOS fabrication process from the electronic integrated circuit (IC) industry. However, this process also limits t…