149 citations · 231 across the 9 of their papers we have counts for
9 papers
Ultrawide-angle diffraction-limited 2D beam steering via hybrid integrated metasurface-photonic circuit
Zhiping He, Luigi Ranno, Padraic Burns +12
Two-dimensional (2D) wide field-of-view (FOV) beam steering is a key enabling capability for emerging free-space optical systems, including inter-satellite optical links, airborne…
Optical Isolation with Microring Modulators
Nathan Dostart, Hayk Gevorgyan, Deniz Onural +1
Optical isolators, while commonplace in bulk- and fiber-optic systems, remain a key missing component in integrated photonic systems. Isolation using magneto-optic effects has been…
Verniered Optical Phased Arrays for Grating Lobe Suppression and Extended FOV
Nathan Dostart, Bohan Zhang, Michael Brand +3
Optical phased arrays (OPAs) which beam-steer in 2D have so far been unable to pack emitting elements at spacing, leading to grating lobes which limit the field-of-view, intr…
Multiplexing Guided Optical and Acoustic Waves for Efficient Acousto-Optic Devices
Nathan Dostart, Miloš Popović
Acousto-optic devices utilize the overlap of acoustic and optical fields to facilitate photon-phonon interactions. For tightly confined optical and acoustic fields, such as the sub…
Serpentine optical phased arrays for scalable integrated photonic LIDAR beam steering
Nathan Dostart, Bohan Zhang, Anatol Khilo +6
Optical phased arrays (OPAs) implemented in integrated photonic circuits could enable a variety of 3D sensing, imaging, illumination, and ranging applications, and their convergenc…
Integrated optical isolators using electrically driven acoustic waves
Nathan Dostart, Yossef Ehrlichman, Cale Gentry +1
We propose and investigate the performance of integrated photonic isolators based on non-reciprocal mode conversion facilitated by unidirectional, traveling acoustic waves. A tripl…
Elastic Wave Eigenmode Solver for Acoustic Waveguides
Nathan Dostart, Yangyang Liu, Miloš A. Popović
A numerical solver for the elastic wave eigenmodes in acoustic waveguides of inhomogeneous cross-section is presented. Operating under the assumptions of linear, isotropic material…
Toward Microphononic Circuits on Chip: An Evaluation of Components based on High-Contrast Evanescent Confinement of Acoustic Waves
Yangyang Liu, Nathan Dostart, Miloš A. Popović
We investigate the prospects for micron-scale acoustic wave components and circuits on chip in solid planar structures that do not require suspension. We leverage evanescent guidin…
Giant Gain Enhancement in Surface-Confined Resonant Stimulated Brillouin Scattering
Nathan Dostart, Seunghwi Kim, Gaurav Bahl
The notion that Stimulated Brillouin Scattering (SBS) is primarily defined by bulk material properties has been overturned by recent work on nanoscale waveguides. It is now underst…