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physics.optics2024
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…
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…
physics.app-ph2024
Passive Aperiodic Optical Phased Array based on Uniform Random Shuffle
Bowen Yu, Dachuan Wu, Yasha Yi
Grating lobes arise from the periodic nature of element spacing in the optical phased array. Essentially, the phased array performs the Spatial Fourier Transform on light; the stee…